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Silicon nitride ceramic piston

Silicon nitride ceramic piston

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

▼Performance characteristic

1. Excellent corrosion resistance ‌ : silicon nitride ceramic tube has good corrosion resistance to most acid, alkali, salt and other chemical media, and can maintain stability in harsh chemical environment ‌

‌2. Excellent high temperature performance ‌ : can maintain stable mechanical properties in a high temperature environment of up to 1400℃, suitable for high temperature gas transport and heat exchange equipment ‌

‌3. High strength and toughness ‌ : compared with traditional ceramics, silicon nitride ceramics exhibit higher strength and toughness and can withstand greater impact and load ‌

‌4. Low friction coefficient and wear ‌ : the high hardness (Mohs hardness 8-9) and low friction coefficient of silicon nitride ceramics enable it to maintain a low resistance coefficient during the fluid transmission process, thereby improving the transmission efficiency ‌

‌5. Good electrical insulation ‌ : silicon nitride ceramics are a good electrical insulation material suitable for applications requiring electrical isolation ‌

‌6. Excellent mechanical properties ‌ : silicon nitride ceramics have high yield strength and fracture resistance, and can maintain stability under heavy load ‌

‌7. Low thermal expansion coefficient ‌ : the low thermal expansion coefficient of silicon nitride ceramics can effectively reduce the deformation at high temperature and ensure the stability of the structure ‌

‌8. High density ‌ : through high temperature and pressure sintering process, the density of silicon nitride ceramic tube can reach more than 98%, improve the strength and wear resistance of the material ‌

▼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.

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