silicon nitride ceramic substrate is a kind of high performance and high stability ceramic substrate material, mainly composed of silicon nitride powder synthesized by silicon and nitrogen elements adding a small amount of oxides and rare earth sintered . It has the advantages of high hardness, high strength, low thermal expansion coefficient, low creep at high temperature, good oxidation resistance, high thermal corrosion performance, low friction coefficient, etc. is one of the best structural ceramic materials with comprehensive performance
MATERIAL : Si3N4
DENSITY : 2.8
COLOR : Black / Blue / White
HRDNESS(Mohs scale) : 9
MAX WORKING TEMPERATURE : 1650
▼Performance characteristic
| ✔ High hardness : The hardness of silicon nitride ceramics is as high as HRC 90 degrees, showing excellent wear resistance |
| ✔ High temperature resistance : its melting point is as high as 1900℃, and it can still maintain high compressive strength at high temperature |
| ✔ Chemical stability : has good chemical stability, can maintain excellent performance in various chemical environments |
| ✔ Low thermal expansion coefficient : at the same temperature change, the thermal stress generated inside silicon nitride ceramics is relatively small, showing a strong thermal load resistance |
| ✔ Self-lubricating : silicon nitride ceramics have self-lubricating properties and are suitable for applications where friction needs to be reduced |
▼Performance characteristic
1. High thermal conductivity : The thermal conductivity of silicon nitride ceramic substrate is several times higher than that of traditional ceramic materials, and even higher than many metal materials. This high thermal conductivity makes the silicon nitride ceramic substrate have excellent heat dissipation performance and can play an important role in high power electronic devices
2. Excellent high temperature stability : silicon nitride ceramic substrate has a small thermal expansion coefficient and good dimensional stability. At the same time, the thermal stability of silicon nitride ceramic substrate is also very good, can withstand long-term use in high temperature environment, not easy to deformation, not easy to crack. Therefore, silicon nitride ceramic substrates are widely used in high temperature fields, such as high temperature resistant electronic devices, high temperature chemical reactors
3. Excellent chemical stability : silicon nitride ceramic substrate has excellent chemical stability, and is not attacked by most acid, alkali and other corrosive substances. In addition, the silicon nitride ceramic substrate also has good oxidation resistance and can be used for a long time in an oxidizing environment
4. High strength and hardness : the bending strength of silicon nitride ceramic substrate can reach 600-700 MPa, the bending strength is 700 MPa, and the fracture toughness is 6.5 MPa·m1/2. These high strength and hardness properties make silicon nitride ceramic substrates perform well in a variety of applications
5. Good insulation and resistance to electrical breakdown : silicon nitride ceramic substrate has good insulation properties, suitable for high-frequency transmission lines and other electronic components
6. Good high frequency characteristic : silicon nitride ceramic substrate has low dielectric constant and low dielectric loss, suitable for high frequency circuit
7. Smooth surface and uniform thickness : The surface of silicon nitride ceramic substrate is smooth and uniform thickness, which is convenient for printing circuits on the surface of the substrate and ensures the uniform thickness of the printed circuit
▼Field of application
1. Mechanical field: silicon nitride ceramics are widely used in the mechanical field to manufacture valves, pipes, grading wheels, ceramic cutters, bearing balls, etc. Its low density, high temperature resistance, self-lubrication and corrosion resistance make it widely used in high-speed machine tool spindle high-speed bearing, aerospace engine, wind turbine bearing, automotive engine bearing and other equipment.
2. Semiconductor field: silicon nitride ceramic has excellent thermal conductivity and high thermal conductivity, making it an ideal material in semiconductor packaging field. Silicon nitride substrates have excellent performance in integrated circuits, high thermal conductivity, high bending strength and good thermal matching, suitable for high-performance power modules.
3. Bioceramic field: As a new generation of bioceramic materials, silicon nitride ceramic has good radiographic imaging performance, anti-infection performance and biocompatibility, and is widely used in biological sensors, spine, orthopedics and dental implants.
4. Wave transmitting material field: silicon nitride ceramics and their composite materials have excellent performances such as heat resistance, wave transmitting and bearing, and are used to manufacture high performance wave transmitting materials such as radome and antenna window.
Application Examples of Silicon Nitride Ceramics
5. Bearing: silicon nitride ceramic bearing ball has the characteristics of low density, wear resistance, high temperature resistance, corrosion resistance and self-lubrication, especially suitable for high-speed rotating bodies, such as high-speed bearing of high-speed machine tool spindle, aerospace engine bearing, etc.
6. Substrate: in the semiconductor field, silicon nitride substrate is widely used in packaging of high-performance power modules due to its high thermal conductivity, high bending strength and good thermal matching.
7. Implants: Silicon nitride ceramics are used in the biomedical field to manufacture spinal intervertebral fusion devices, orthopedic and dental implants, etc., with good biocompatibility and anti-infection performance.
Transparent material: silicon nitride ceramic and its composite materials are used to fabricate radome and antenna window, which have excellent transparent performance and high temperature resistance.
Silicon nitride ceramic ball is a kind of precision ceramics sintered at high temperature in non-oxidizing atmosphere, with high strength, high wear resistance, high temperature, corrosion resistance, acid and alkali resistance and other excellent properties. Its density is 3.20g/cm³, about 1/3 of the weight of bearing steel, small centrifugal force when rotating, suitable for high-speed operation. In addition, silicon nitride ceramic balls are also self-lubricating, suitable for non-lubricating media and high pollution environment MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
silicon nitride ceramic substrate is a kind of high performance and high stability ceramic substrate material, mainly composed of silicon nitride powder synthesized by silicon and nitrogen elements adding a small amount of oxides and rare earth sintered . It has the advantages of high hardness, high strength, low thermal expansion coefficient, low creep at high temperature, good oxidation resistance, high thermal corrosion performance, low friction coefficient, etc. is one of the best structural ceramic materials with comprehensive performance MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic bolt is a kind of bolt made of silicon nitride (Si3N4) material, which has excellent high temperature resistance, corrosion resistance and mechanical properties. Silicon nitride ceramic bolts perform well at high temperatures, maintain high strength at 1200 ° C, and only break down at 1900 ° C . In addition, it also has good chemical resistance, able to resist almost all inorganic acids (except hydrofluoric acid) and less than 30% caustic soda solution MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic rods perform well in high temperature environments, have good heat shock resistance, and can maintain high strength and impact resistance at high temperatures. Its decomposition temperature is 1800℃ in the air, up to 1850℃ in nitrogen, and it will not break after being heated in cold water at 1000℃ . Silicon nitride ceramics have high thermal conductivity and low coefficient of thermal expansion, which makes them have excellent heat shock resistance at high temperature MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic tubes can maintain stable mechanical properties at high temperatures up to 1400 ° C. Compared with traditional ceramics, silicon nitride ceramics show higher strength and toughness, and can withstand greater impact and loads . MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
The Mohs hardness of silicon nitride ceramics is usually above 9, which makes it excellent in wear resistance and scratch resistance , enough to keep its physical and chemical properties stable at extreme high temperatures, melting point of more than 2700℃, can still maintain good mechanical strength and dimensional stability at high temperatures. MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
The Mohs hardness of silicon nitride ceramics is usually above 9, which makes it excellent in wear resistance and scratch resistance , enough to keep its physical and chemical properties stable at extreme high temperatures, melting point of more than 2700℃, can still maintain good mechanical strength and dimensional stability at high temperatures MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
The Mohs hardness of silicon nitride ceramics is usually above 9, which makes it excellent in wear resistance and scratch resistance , enough to keep its physical and chemical properties stable at extreme high temperatures, melting point of more than 2700℃, can still maintain good mechanical strength and dimensional stability at high temperatures MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic is a kind of made of silicon nitride (Si3N4) material, which has excellent high temperature resistance, corrosion resistance and mechanical properties. Silicon nitride ceramic perform well at high temperatures, maintain high strength at 1200 ° C, and only break down at 1900 ° C . In addition, it also has good chemical resistance, able to resist almost all inorganic acids (except hydrofluoric acid) and less than 30% caustic soda solution MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic tubes can maintain stable mechanical properties at high temperatures up to 1400 ° C. Compared with traditional ceramics, silicon nitride ceramics show higher strength and toughness, and can withstand greater impact and loads . MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Technial Ceramics are used to make the welding guide pins, which are used for projection welding and resistance welding in automotive industry. Ceramic pins are electrical insulated and high thermal shock resistant. Besides, they can be used up to 1,200 degree C. So they offer much longer service life and higher economic efficiency. MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic piston is a kind of high performance material, with high bulk density, high thermal shock resistance, high hardness and high temperature resistance. These characteristics make silicon nitride ceramic pistons perform well in extreme environments and are widely used in various industrial fields. MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic is a kind of made of silicon nitride (Si3N4) material, which has excellent high temperature resistance, corrosion resistance and mechanical properties. Silicon nitride ceramic perform well at high temperatures, maintain high strength at 1200 ° C, and only break down at 1900 ° C . In addition, it also has good chemical resistance, able to resist almost all inorganic acids (except hydrofluoric acid) and less than 30% caustic soda solution MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic rings are usually manufactured by hot press sintering process . This process sintering silicon nitride powder under high temperature and high pressure conditions significantly improves the density and mechanical properties of the material. By optimizing the hot press sintering process, the overall performance of silicon nitride ceramic rings can be further improved, making it more suitable for harsh industrial needs MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic bolt is a kind of bolt made of silicon nitride (Si3N4) material, which has excellent high temperature resistance, corrosion resistance and mechanical properties. Silicon nitride ceramic bolts perform well at high temperatures, maintain high strength at 1200 ° C, and only break down at 1900 ° C . In addition, it also has good chemical resistance, able to resist almost all inorganic acids (except hydrofluoric acid) and less than 30% caustic soda solution MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
Silicon nitride ceramic structure is a kind of ceramic material composed of silicon and nitrogen elements, chemical formula Si3N4, with unique crystal structure and excellent physical and chemical properties . Its basic structural unit is the tetrahedron [SiN4], the silicon atom is located in the center of the tetrahedron, surrounded by four nitrogen atoms, forming the form of one atom for every three tetrahedra, forming a continuous and sturdy network in three-dimensional space MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
The Mohs hardness of silicon nitride ceramics is usually above 9, which makes it excellent in wear resistance and scratch resistance , enough to keep its physical and chemical properties stable at extreme high temperatures, melting point of more than 2700℃, can still maintain good mechanical strength and dimensional stability at high temperatures MATERIAL : Si3N4 DENSITY : 2.8 COLOR : Black / Blue / White HRDNESS(Mohs scale) : 9 MAX WORKING TEMPERATURE : 1650
Details
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