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Zirconia ceramic block is a common ceramic material whose main component is zirconia. Zirconia ceramics is a ceramic material with high performance, high strength and high wear resistance. Its production process mainly includes the following steps:   Raw material preparation: Mix zirconia ceramic powder and other additives evenly according to a certain proportion.   Molding: Put the evenly mixed raw materials into the mold for molding. Commonly used molding methods include dry press molding, injection molding and extrusion molding. Sintering: The formed blank is placed in a high-temperature sintering furnace for sintering treatment, so that the particles are combined into a solid ceramic block.   Processing: The sintered zirconia ceramic block usually requires subsequent processing, including grinding, polishing, wire rolling and other processes to achieve the required size and surface finish. .   Testing: Strictly test the completed zirconia ceramic blocks to ensure that the products meet quality standards and have good stability and durability.   The production process of zirconia ceramic blocks requires multiple steps such as raw material preparation, molding, sintering, processing and testing. Each link needs to be strictly controlled to ensure that the quality and performance of the final product meet the requirements.

Silicon nitride ceramic is an emerging high-performance ceramic material with excellent heat resistance, corrosion resistance, wear resistance and insulation properties, and is widely used in many fields. Its main uses are as follows:   Electronics industry: Excellent insulation properties and high temperature resistance, can be used to manufacture electronic components, insulators, packaging materials, etc. In the semiconductor industry, silicon nitride ceramics are also widely used in the manufacture of photovoltaic transistors, integrated circuits and other devices.   Mechanical Engineering: The excellent wear resistance can be used to manufacture wear-resistant silicon nitride ceramic parts such as bearings, seals, nozzles, etc. At the same time, its high temperature stability also makes it an ideal material for manufacturing high temperature furnaces, heat exchangers and steam turbine parts. Chemical industry: Silicon nitride ceramics have excellent corrosion resistance and can resist the erosion of corrosive media such as strong acids and alkalis. Therefore, they are widely used in the chemical industry to manufacture corrosion-resistant equipment such as reactors, pipelines, and pump bodies.   Energy field: Silicon nitride ceramics can be used to manufacture high-temperature burners, solar reflectors, plasma nozzles, etc. Its high temperature resistance and corrosion resistance make it an indispensable material in energy equipment.   Medical field: Silicon nitride ceramics have good biocompatibility and high temperature resistance and can be used to manufacture medical appliances, orthopedic implants, medical ceramics and other products, providing high-quality material options for the medical industry.   Silicon nitride ceramics have many excellent properties and can be used in the manufacturing of high-end technology products in various fields. They are used to manufacture various silicon nitride ceramic parts, which have brought huge benefits to improving product performance, extending service life, and reducing costs. the benefits of.

Zirconia ceramic is a ceramic material with excellent properties and has many advantages and characteristics. Zirconia ceramics are harder and more wear-resistant than traditional ceramic materials such as alumina ceramics, so they can work normally under harsh conditions such as high temperatures and high pressures. Zirconia ceramics have excellent corrosion resistance and can withstand the erosion of chemical properties such as acids and alkalis. They are widely used in chemical industry, medical equipment and other fields. In addition, zirconia ceramics also have excellent insulation properties and high-temperature stability, and can be used to manufacture zirconia ceramic parts in high-temperature environments such as electronic components and electronic devices. In addition, zirconia ceramics can be used to make implants, medical devices and other products that come into contact with the human body, and have excellent biocompatibility, health and environmental protection. Its surface is smooth and not easy to breed bacteria, which is conducive to keeping the product hygienic and clean. In addition, it also has good wear resistance and abrasion resistance, which can maintain the appearance and performance of the product for a long time, reduce the frequency of maintenance and replacement, and save cost and time. The performance and application fields of zirconia ceramics will continue to expand and deepen, bringing more convenience and surprises to people's lives and work.

Alumina ceramic is an important industrial material, widely used in electronic devices, magnetic materials, mechanical parts and other fields. However, the traditional alumina ceramic production process has problems such as high energy consumption, high exhaust gas emissions, and serious pollution to the environment. In order to achieve environmentally friendly production of alumina ceramics, the following options can be adopted: Use clean energy: Clean energy such as solar energy and wind energy can be introduced to replace traditional thermal power generation and reduce carbon dioxide emissions. Recycling of waste materials: The waste residue and waste water are scientifically treated and then recycled and reused to produce alumina ceramic parts to achieve resource recycling. Promote green packaging: Use degradable packaging materials to reduce plastic pollution. Strengthen environmental awareness: Environmental protection training for employees should be strengthened to increase awareness and emphasis on environmental protection and promote enterprises to continuously improve environmental management. In general, the realization of environmentally friendly production of alumina ceramics requires the joint efforts of the whole society. Through the above measures, the environmental impact in the production process of alumina ceramics can be effectively reduced and environmentally friendly production can be achieved.

Zirconia ceramic is a new type of high-performance ceramic material with excellent mechanical properties, chemical stability and wear resistance. Therefore, it is widely used in aerospace, medical equipment, electronic components and other fields. The production process mainly includes raw material preparation, tire molding, sintering, surface treatment and other links. 1. Preparation of raw materials. First, you need to prepare zirconia powder, add a certain proportion of stabilizers and additives, and mix them evenly according to a certain ratio to improve the mechanical properties and processing performance of the material. 2. Tire making and molding. The mixed raw materials are molded. Commonly used molding methods include injection molding, pressing, extrusion, etc. 3. Sintering. The high-temperature solid-state sintering method is usually used to sinter the formed zirconia body at high temperature to enhance the intergranular capacity and density, thereby improving the hardness and strength of the material. 4. Surface treatment. The sintered zirconia ceramic body needs to be processed, including trimming, grinding, polishing and other methods to ensure the beautiful appearance and service life of the product. In general, every link in the production process of zirconia ceramics plays a vital role in the performance and quality of the final product. By continuously optimizing and improving the production process, zirconia ceramic standard parts with better performance can be produced to meet the needs of different fields.

Silicon nitride ceramic is a high-performance ceramic material with the following advantages and uses: 1. High hardness: The hardness of silicon nitride ceramic is second only to diamond and boron nitride ceramic, and it can withstand high physical force and wear. 2. High thermal conductivity: Silicon nitride ceramic has good thermal conductivity and can effectively conduct and dissipate heat, improving the working efficiency and life of the equipment. 3. Corrosion resistance: It can withstand the erosion of corrosive media such as acids and alkalis, and is suitable for harsh chemical working environments. 4. Low friction coefficient: Silicon nitride ceramic has a smooth surface and low friction coefficient. It has good self-lubricating properties and is suitable for use in high-speed friction and wear environments. 5. Wide range of uses: Silicon nitride ceramics can be used to manufacture high-temperature parts, cutting tools, silicon nitride ceramic shaft, seals, silicon nitride ceramic ring, etc., and are widely used in aerospace, electronics, chemical industry, machinery and other fields. In short, silicon nitride ceramics play an important role in harsh environments such as high temperature, high pressure, and corrosion due to their excellent properties and have broad application prospects.

There are several reasons why ceramic injection molding time is longer than plastic injection molding: 1. Material Properties: Ceramics are generally harder and more brittle than plastics. This means that they require higher temperatures and pressures during the injection molding process, which can result in longer cooling and curing times. 2. Tooling Design: Macor Ceramics Ceramic injection molding often requires more complex and specialized tooling compared to plastic injection molding. The molds used for ceramic injection molding need to withstand higher temperatures and pressures, and they may require additional features such as heating elements or cooling channels. The design and fabrication of such molds can take more time. 3. Material Preparation: Ceramic powders used in injection molding often require additional processing steps, such as mixing, drying, and granulating, to achieve the desired properties. These preparation steps can add time to the overall manufacturing process. 4. Shrinkage and Dimensional Control: Ceramics tend to shrink more during the cooling and curing process compared to plastics. Achieving precise dimensional control in ceramic injection molding can be more challenging, requiring additional time Zirconia Ceramic Structural Parts for testing and adjustments. 5. Post-processing: After the injection molding process, ceramic parts often require additional post-processing steps such as debinding and sintering to remove binders and achieve the Alumina Ceramics desired final properties. These additional steps can significantly increase the overall manufacturing time. Overall, the more complex material properties, tooling requirements, and post-processing steps involved in ceramic injection molding contribute to longer manufacturing times compared to plastic injection molding.

Macor ceramic, also known as machinable glass ceramics, is a versatile material that finds applications in various industries. Some common uses of Macor ceramic include: 1. Electrical insulators: Macor is an excellent electrical insulator, making it suitable for applications where electrical insulation is required. It is used in high-temperature electrical insulators, feedthroughs, and insulating washers. 2. Thermal barriers: Macor ceramics has low thermal conductivity, making it useful in applications where thermal insulation is needed. It is used in high-temperature environments as thermal barriers, heat shields, and furnace components. 3. Vacuum environments: Macor is non-outgassing and does not release any volatile substances in vacuum conditions. This property makes it suitable for use in vacuum environments, such as in semiconductor manufacturing and aerospace applications. 4. Precision components: Macor ceramic is machinable, meaning it can be easily shaped and machined to create intricate components with tight tolerances. It is used for manufacturing precision parts, such as jigs, fixtures, and tooling. 5. Medical and scientific equipment: Macor ceramic is biocompatible and chemically inert, making it suitable for use in medical and scientific equipment. It is used in applications like laboratory equipment, analytical instruments, and medical devices. 6. Nuclear industry: Macor has good radiation resistance and is used in nuclear applications, including radiation shielding, nuclear fuel handling, and containment systems. 7. Aerospace and defense: Macor ceramic is used in the aerospace and defense industries for various applications, such as radar systems, missile components, and high-temperature sensors. Overall, Macor ceramic's unique combination of electrical insulation, thermal resistance, machinability, and chemical inertness makes it a valuable material in a wide range of industries and applications.

Zirconia ceramic is a ceramic material made of zirconia. Due to its excellent chemical stability, high strength, wear resistance and high temperature resistance. Below are some common examples of its manufacturing processes and application areas. Craftsmanship: Method based on powder metallurgy: Mix zirconia powder and relevant additives into a slurry, and then go through process steps such as molding, drying and sintering to finally obtain the finished product. Method based on sol-gel method: Dissolve zirconia in an appropriate solution, and prepare zirconia ceramics through steps such as gelation, drying and sintering. Application areas: Medical devices: Zirconia ceramics have good biocompatibility and chemical stability and are widely used in medical device fields such as artificial joints, implants and dental materials. For example, zirconia ceramic pin can be used in dental surgeries, skin stimulation, and cell culture. The ball head part of artificial hip joints usually uses zirconia ceramics because its hardness and wear resistance can increase the life of the joint. Electronic devices: The high dielectric constant and low conductivity of zirconia ceramics make it an important material in electronic devices, such as capacitors, sensors, and insulators. Functional materials: Due to their excellent physical and chemical properties, zirconia ceramics are often used as functional materials. For example, zirconia ceramics have important applications in energy and environmental fields such as gas sensors, solid oxide fuel cells, and solar cells. Mechanical engineering: It can be applied to mechanical parts that require wear resistance, such as zirconia ceramic shaft, seals and cutting tools, etc. It can also be used in high-temperature and high-strength engineering structures, such as pneumatic and aerospace engine components. Thermal barrier coating: Thermal barrier coating technology can be applied to protect the surface of high-temperature equipment and provide thermal insulation properties. The production technology and application fields of zirconia ceramics are very wide. With the continuous development of science and technology, the related applications of zirconia ceramics will continue to expand and innovate.

Zirconia ceramic material is a high strength, high toughness and high wear resistance material used in a variety of applications. When choosing a suitable zirconia ceramic material, you can consider the following factors: Application requirements: The mechanical properties, chemical stability, thermal conductivity, etc. of the material need to be determined. This will help you choose the right material. Structure type: Zirconia has two common crystal phases: monoclinic phase and cubic phase. The monoclinic phase is stable at lower temperatures, while the pseudocubic phase is stable at high temperatures. Optical properties: Often used to make artificial teeth, dentures and other medical devices. In these applications, material color and transparency are very important. Manufacturing process: Usually manufactured by sintering process. Different manufacturing processes may affect the material's properties. The coefficient of thermal expansion should also be considered. If your application requires the use of materials at high temperatures, you will need to choose a material with a matching coefficient of thermal expansion to avoid cracking or deformation of the material. Common zirconia ceramic molding methods: Plate Forming: Zirconia Ceramic Plate is made by evenly spreading the zirconia ceramic powder in the mold, applying pressure with a press or by hand, so that the powder becomes compact and forms the desired shape. Form Molding: The form molding method is suitable for producing large quantities of Zirconia Ceramic Standard Parts, allowing for efficient manufacturing of consistent products. Slurry injection molding: Mix ceramic powder and liquid to form a viscous slurry, and inject the slurry into the mold. After solidification, the mold is taken out, and the ceramic parts are sintered in a high-temperature sintering furnace to form the final Zirconia Ceramic Structural Parts.

Zirconia ceramic is an excellent dental material. It has high strength, excellent biocompatibility and good aesthetics, making it more popular than traditional metal alloy implants. It is widely used in implant surgery. Dental implants made with zirconia ceramics are not only more reliable, but also offer many other advantages. 1. It has high strength and wear resistance. Zirconia ceramics can withstand greater biting force, have a longer service life, and can withstand long-term use in the complex environment in the oral cavity without being easily worn. 2. It has good biocompatibility. As a metal-free material, it has good compatibility with oral tissues, will not cause oral inflammation or infection, and will not cause allergic reactions or other discomforts. 3. It has good aesthetic effect. Zirconia ceramics have better transparency and color stability. It blends better with natural teeth and provides a more natural aesthetic result. It is not easy to breed bacteria and dental plaque, and keeping the oral cavity clean can effectively prevent the occurrence of periodontal disease. 4. Zirconia ceramics also have advantages in clinical operations. Due to its high strength and wear resistance, not only can more detailed and stable implants and restorations be produced. Precise digital design and production can also be carried out through CAD/CAM technology to improve the accuracy and efficiency of implant surgery. Zirconia Ceramics can be processed into a variety of different parts through different processing methods. Such as zirconia ceramic cutting tools, Zirconia Ceramic Tube, zirconia ceramic sheets, Zirconia Ceramic Ring, zirconia ceramic insulating tubes, etc. These various Zirconia Ceramic Parts have excellent properties and are used in various fields to meet the needs of different industries.

Zirconia ceramics is not inherently anti-static, meaning it can generate static electricity. However, there are ways to protect zirconia ceramic from electrostatic discharge (ESD): 1. ESD Coating: Apply a specialized anti-static coating on the surface of zirconia ceramic to reduce static electricity buildup. 2. Grounding: Connect the zirconia ceramic to a grounded object or system to dissipate any static charges that may accumulate. 3. Humidity Control: Maintain a controlled humidity environment as higher humidity levels can help dissipate static charges. 4. ESD Packaging: Store and transport zirconia ceramic components in ESD-safe packaging, such as anti-static bags or containers, to prevent ESD damage during handling. 5. ESD Safe Handling: When working with zirconia ceramic, use ESD-safe gloves, wrist straps, and workstations to minimize the risk of ESD. By implementing these protective measures, the risk of ESD damage to zirconia ceramic can be significantly reduced.

Alumina ceramic is a common engineering ceramic material with excellent insulation, high temperature heat resistance, corrosion resistance and high strength. Alumina ceramic standard parts refer to ceramic parts manufactured in accordance with specific standards and specifications and used for connection or positioning of mechanical equipment, such as alumina ceramic bearings, alumina ceramic washers, etc. How do ceramic pieces adapt to different working environments? 1. Choose the right material. 2. Reasonably designed structure: According to the requirements of the working environment, a reasonable structure is designed so that the alumina ceramic standard parts can withstand corresponding pressure and force and increase its thermal stability. 3. Surface treatment: Surface treatment and coating treatment are performed on standard parts to increase surface hardness and internal wear resistance. 4. Strict quality control: By controlling parameters such as sintering temperature and time, the reliability and strength of product quality are improved. It adapts to different working environments by selecting appropriate materials, well-designed structures, surface treatments and strict quality control to ensure its reliability and stability under various harsh conditions. Common industries where ceramic parts can be used: 1. Alumina ceramic plates can be used in electronic components in electronics, communications and other industries. 2. Alumina ceramic shafts can be used for bearing support in high-speed rotating equipment and high-temperature and high-pressure environments in machinery, aerospace, chemical and other industries. 3. Alumina ceramic tubes can be used in corrosion-resistant pipes, heat transfer equipment, electrical insulation, etc. in chemical, electric power and other industries. 4. Alumina ceramic tiles are used in circuit substrates, artificial joints, etc. in the medical, electronic, chemical and other industries. Alumina ceramic standard parts have a wide range of applications, but are not limited to this. They can meet the special requirements of various industries and machines for high temperature, high pressure, corrosion resistance and other special requirements. The specific application also depends on the material properties and customer needs.

Zirconia Ceramics is a ceramic material made from zirconium oxide (ZrO2). It is a high-performance ceramic with excellent physical, chemical and mechanical properties and is widely used in various fields. The main steps for preparing zirconia ceramics include raw material selection, mixing, shaping, sintering and processing. First of all, selecting appropriate zirconia raw materials is the first step in preparing zirconia ceramics. Commonly used zirconia raw materials mainly include zirconia powder and zirconia film. The particle size and purity of zirconia powder are one of the important factors affecting the performance of ceramic materials. Zirconia film has higher density and better purity, and can be used to prepare high-performance zirconia ceramics. Next, the zirconia raw materials are mixed. The purpose of mixing is to evenly disperse the various ingredients in the raw materials and ensure that the resulting ceramic material has consistent properties. Mixing is usually accomplished by dry mixing or wet mixing. Dry mixing uses a ball mill or mixer to mix the raw material powder evenly, while wet mixing is performed in a liquid medium to form a uniform slurry. Then, the mixed raw materials are molded. Shaping is the process of converting raw materials into ceramic bodies with the desired shape and size. Commonly used molding methods include compression, injection molding, extrusion, and molding. Pressing is the most commonly used forming method. The mixed raw materials are pressed into a green body by applying pressure in a mold. In injection molding and extrusion, the slurry is injected into the mold through special equipment to form a green body. Molding is to put mixed raw materials into a mold and use pressure to shape the raw materials in the mold. The shaped ceramic body needs to be sintered. Sintering is to heat the green body to a high temperature to cause physical and chemical changes to form a dense ceramic material. During the sintering process, the surface energy of the raw material particles decreases, and the particles undergo solid-phase and liquid-phase combination to form a dense structure. Control of sintering temperature and time is very important to ensure that the resulting zirconia ceramic has good properties. Finally, the sintered zirconia ceramic can further improve its properties through processing and subsequent treatments. Zirconia Ceramics Processing includes grinding, cutting, polishing and surface coating. Subsequent processing can include heat treatment, hydrophobic treatment, surface modification and other methods on ceramic materials to enhance the performance and durability of the material. Generally speaking, zirconia ceramics are prepared by selecting appropriate zirconia raw materials and carrying out mixing, shaping, sintering and processing steps. It has good physical, chemical and mechanical properties and is widely used in medical, electronics, aerospace and other fields.

Alumina Ceramics have the following characteristics: 1. High hardness: The hardness of alumina ceramic is close to diamond, several times that of metal materials, and can resist scratching and wear. 2. Wear resistance: Wear Resistant Alumina Ceramic have excellent wear resistance and can maintain good wear resistance under harsh working conditions such as high speed, high pressure, and high temperature. 3. High-temperature stability: Alumina ceramics can maintain high strength and hardness in high-temperature environments and are not easy to deform and melt. 4. Corrosion resistance: Alumina ceramics have good acid and alkali corrosion resistance and can resist the erosion of most chemical substances. 5. Insulation: Alumina ceramic is an excellent insulating material and can maintain good insulation performance under high temperature, high voltage and other conditions. 6. Thermal conductivity: Alumina ceramics have high thermal conductivity, can effectively conduct heat, and are widely used in the field of heat conduction and heat dissipation. 7. High strength: Alumina ceramics have high strength and toughness and can withstand greater pressure and impact. 8. Lightweight: Alumina ceramics are lighter than metal materials, which can reduce the weight of equipment. 9. Biocompatibility: Alumina ceramics are non-toxic and harmless to the human body, have good biocompatibility, and can be used in fields such as medical devices and artificial joints. In short, alumina ceramics have a variety of excellent properties and are therefore widely used in machinery, electronics, chemical industry, medical and other fields.

Zirconia ceramics is a new type of high-tech pottery, which in addition to porcelain needs to have high wear resistance, compressive strength, high temperature resistance, corrosion resistance and high analytical chemical stability specifications, but also has a higher hardness than the general pottery, to promote zirconia ceramics are also used in every industrial production, such as centrifugal water pump sealing roller bearings, drilling parts, mold shell, auto parts, etc. It can even be used on the body, like in an external fixator. With the continuous development trend of zirconia ceramics technology, zirconia ceramics are widely used in industrial production, zirconia ceramic structure is the selection of zirconia ceramic materials filled with powder calcined ceramic products, zirconia ceramic parts than the general porcelain and metal materials more wear and heat resistance. What are the advantages of zirconia ceramic parts compared with other raw materials? According to the practical experience of the sales market, the excellent characteristics of zirconia ceramic parts compared with other raw materials are still very prominent. Introduction to stock trading 1, high quality insulation, low high frequency loss, good high frequency insulation characteristics; 2, temperature resistance, with small linear expansion coefficient, impact toughness, good thermal conductivity and other characteristics. 3, solvent corrosion resistance and melting gold properties. 4, zirconia ceramic parts are non-combustible, stainless steel, firm and not easy to destroy, zirconia ceramic parts have other organic materials and metal composite materials can not be compared with the high quality characteristics. 5. Wear resistance, its strength is the same as that of steel jade, so that the hardness is nine, and the wear resistance is comparable with super hard aluminum alloy. At this stage, the main uses are more common, the key is due to the inherent wear resistance, corrosion resistance, high temperature thermal shock resistance of zirconia ceramic parts, can serve as many structural parts industry. Moreover, the excellent organic chemical reliability determines its corrosion resistance, and it can be applied in acid-alkaline and alkaline substances.

This paper mainly introduces the difference between silicon carbide ceramics and silicon nitride ceramics. Introduction of silicon nitride ceramics: Silicon nitride is a new type of ceramic material, gray and white solid, with silicon carbide has a high degree of thermal stability and chemical stability, friction coefficient is only 0.1 ~ 0.2, equivalent to the lubrication of the metal surface, hardness second only to diamond and cubic boron nitride. Its largest application area is also as a high-temperature structural ceramic material. Adding a small amount of aluminum oxide to silicon nitride can make a new type of ceramic, whose trade name is sialon. Ceron ceramics have been widely used in gas turbine blades, machine housings, engine components, rocket tail nozzles, bearings and cutting tools. Properties: Inorganic materials that do not shrink during sintering, small coefficient of thermal expansion and extremely high temperature resistance, strength can be maintained to 1200C high temperature without falling, excellent thermal shock stability and amazing chemical corrosion resistance, can withstand almost all inorganic acids and less than 30% caustic soda solution, is a high-performance electrical insulation material. Advantages: Good resistance to hot and cold shock performance, heating to more than 1000C in the air, rapid cooling and then rapid heating, will not break, compared with alumina is not easy to heat transfer. Disadvantages: the fracture toughness coefficient is low, the mechanical strength in the ceramic is middle and lower, easy to crack and break. Applications: high temperature bearings, mechanical sealing rings, pipelines and valves for electromagnetic pumps transporting liquid aluminum, etc. Second, silicon carbide ceramics introduction: Silicon carbide is commonly known as carborundum, generally made of silica and coke mixed by electric reaction. Silicon carbide is composed of sic, which is green, black and yellow due to impurities. In industry, it is divided into green silicon carbide and black silicon carbide according to color, and its sic content is ≥99% and 98.5%, respectively. Silicon carbide is a kind of covalent bond compound, strong interatomic bonding force, high melting point, high hardness, high strength and low expansion, high thermal conductivity, high electrical conductivity, strengthening chemical stability, so it is a good refractory material. However, in an oxidizing atmosphere, silicon carbide is easily oxidized. Performance: It has excellent mechanical properties at room temperature, high energy bending strength, excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, and its high temperature strength can be maintained to 1600C, which is the best high temperature strength material in ceramic materials, and the oxidation resistance is also the best in all non-oxide ceramics. Advantages: Silicon carbide ceramics have excellent high temperature creep resistance, and has semiconductor properties, a small amount of impurities will show good electrical conductivity, processing can obtain mirror effect. Disadvantages: The disadvantage of silicon carbide ceramics is that the fracture toughness is low, that is, the brittleness is larger. Application: Widely used in large blast furnace lining; Mechanical sealing ring, metal burring removal tool, etc. There are many differences between silicon carbide ceramics and silicon nitride ceramics, so far today, and the follow-up will continue to share!

When we hear about ceramic knives, is the first impression that they are fragile, like teacups/bowls that break when dropped from high places? So what are ceramic cutting tools, and are they as fragile as pottery such as teacups/bowls? Let's talk about the differences between the two. 01 Different raw materials The main raw material for pottery such as tea cups/bowls is clay, while the ceramics used for cutting tools are based on high-hardness, chemically stable raw materials such as alumina Al2O3 and zirconium dioxide ZrO2. They are made of materials much harder than clay. 02 Different molding methods Teacups/bowls and other pottery are mostly made by hand or hand-made utensils. The cutting ceramic tool is to load the raw materials into a special mold, and then use special equipment to press and form about 1 to 2 tons per square centimeter, thereby eliminating the gap between the particles and forming a high-strength ceramic tool material. 03 Different sintering temperature Pottery such as teacups/bowls is sintered at relatively low temperatures of about 900 to 1300 ° C, while ceramic cutters used in cutting are sintered at high temperatures above 1500 ° C. In addition, the sintering temperature and sintering time are strictly controlled to ensure the production of high-quality, high-performance ceramic tools. The same is ceramic, due to the above raw materials, production processes and other different, so that ceramic tools have two excellent characteristics. Let's take a look at how ceramic tools can use these characteristics to play a role in high-speed machining. Even in a high temperature environment, it can maintain a high hardness. The figure above shows the relationship between ambient temperature and material hardness. Most materials soften when heated, as do cutting tools. The higher the ambient temperature, the greater the decrease of material hardness. The hardness of cemented carbide and cermet at 1000 ° C will drop to about 35% of the normal temperature state. And ceramics (white porcelain HC1, black porcelain HC2, silicon nitride ceramic SX6) under the same conditions, the hardness decline is much smaller. In particular, the silicon nitride ceramic SX6 material, even at the temperature of 1000 ° C, its hardness can still be maintained at about 73% of the normal temperature state. Even in a high temperature environment, it can maintain a high bending strength. The figure above shows the relationship between ambient temperature and the bending strength of the material. Cemented carbide has high bending strength and is not easy to crack at room temperature. Even so, as the ambient temperature rises, the strength decreases sharply. When the temperature reaches 1200°, the strength decreases to about 35% compared with normal temperature. And ceramics (white porcelain HC1, black porcelain HC2, silicon nitride ceramic SX6) under the same conditions, the strength decline is much smaller. In particular, the silicon nitride SX6 material, even at the temperature of 1200°, its strength can still be maintained at room temperature of about 82%. We know that during the cutting process, the friction between the tool and the material to be machined will produce a lot of cutting heat. The faster the cutting speed, the higher the temperature of the tool tip rises, the harder the tool hardness and bending strength are to maintain, which limits the cutting speed that can be used in normal processing. The ceramic tool uses its material characteristics of high hardness and good folding strength in the field of high temperature to achieve high-speed processing far beyond cemented carbide, thereby greatly improving production efficiency. (Material from the Internet)

At present, zirconia ceramics have a very wide range of applications, and the market demand is also increasing, so now zirconia ceramic manufacturers are more and more, so how to choose zirconia ceramic manufacturers? Here is the analysis for you. 1, to have high-precision equipment Because the processing of zirconia ceramics is extremely difficult for the equipment requirements are also extremely high, requiring very high-precision imported equipment, and such equipment is also more expensive in terms of input cost, so not every manufacturer will have, therefore, enterprises in the choice of zirconia ceramics manufacturers when the best to visit the factory to understand, to see whether the use of high-precision equipment. 2, the process should be exquisite Only off-the-shelf equipment is not enough to 100% guarantee the product quality of zirconia ceramics, but also should have a supporting production process, so whether the production process of zirconia ceramics is exquisite is another key point that enterprises need to pay attention to when choosing manufacturers. Only good technology can make the products produced better in wear resistance, corrosion resistance, high temperature resistance, acid and alkali resistance, and can reach the international advanced level. 3, the quality of raw materials to be reliable In addition to good equipment and good technology in order to produce zirconia ceramics better quality, in terms of raw materials should also pay attention to the choice, enterprises in the selection of manufacturers should understand what materials manufacturers use, try to choose the use of modern engineering ceramic materials manufacturers, because this ceramic material hardness is higher, wear resistance is better.

At present, the voice of protecting the environment and saving energy is rising, making the domestic new energy electric vehicles more concerned. High-power packaging devices play a decisive role in regulating vehicle speed and storage-to-convert AC and DC. The high frequency thermal cycle puts forward strict requirements on the heat dissipation of electronic packaging, and the complexity and diversity of the working environment require the packaging material to have good thermal shock resistance and high strength to play a supporting role. In addition, with the rapid development of modern power electronics technology, which is mainly characterized by high voltage, high current and high frequency, the heat dissipation efficiency of power modules applied in this technology has become the key. The ceramic substrate material in the electronic packaging system is the key to efficient heat dissipation, and should also have high strength and high reliability in order to cope with the complexity of the working environment. In recent years, the ceramic substrates that have been mass-produced and widely used are mainly: Al2O3, BeO, SiC, Si3N4, AlN and so on. Properties of different kinds of ceramic substrates (Source: Liao Shengjun. Preparation and Properties of Silicon nitride ceramic Materials for substrate Al2O3 because of its simple preparation process, good insulation, and high temperature resistance, currently occupies an important position in the heat dissipation substrate industry. However, the low thermal conductivity of Al2O3 cannot meet the development requirements of high-power and high-voltage devices, and is only suitable for working environments with low heat dissipation requirements, and due to the low bending strength, the application range of Al2O3 ceramics as a heat dissipation substrate is also limited. Although BeO ceramic substrate has high thermal conductivity and low dielectric constant to meet the requirements of efficient heat dissipation, but because of its toxicity, it has an impact on the health of workers and is not conducive to large-scale application. AlN ceramics have high thermal conductivity and are considered as candidate materials for heat dissipation substrates. However, AlN ceramics have poor thermal shock resistance, easy deliquescent, low strength and toughness, which is not conducive to working in complex environment and difficult to ensure the reliability of its application. SiC ceramics have high thermal conductivity, but because of their high dielectric loss and low breakdown voltage, it is not conducive to the application of high frequency and high voltage working environment. Silicon nitride is recognized as the best ceramic substrate material with high thermal conductivity and high reliability at home and abroad. Although the thermal conductivity of Si3N4 ceramic substrate is slightly lower than that of AlN, its bending strength and fracture toughness can reach more than twice that of AlN. At the same time, the thermal conductivity of Si3N4 ceramics is much higher than that of Al2O3 ceramics. In addition, the thermal expansion coefficient of the Si3N4 ceramic substrate is close to that of the third-generation semiconductor substrate SiC crystal, making it more stable to match the SiC crystal material. This makes Si3N4 the preferred material for high thermal conductivity substrates for 3rd generation SiC semiconductor power devices.