HIP Silicon Nitride Ball

Hot isostatic pressing (HIP, HIPping or HIPped) silicon nitride ceramic balls represent one of the highest levels in the preparation of silicon nitride materials. Comply with ASTM F2094 Grade II material standard.

Both gas pressure sintering (GPS) and hot isostatic pressing (HIP) use gas as the method of transmitting pressure, but their pressure and pressure effect are different. The atmosphere pressure in HIP sintering is high (100- 300 MPa), which is mainly used to promote the complete densification of ceramics. In GPS sintering, the applied gas pressure is low (1 -10 MPa), which is mainly to inhibit the thermal decomposition of Si₃N₄ or other nitride high-temperature materials.

The performance of ceramic ball products is stable, and the comprehensive performance of silicon nitride is the best. Compared with steel, it is lighter in weight, smaller in friction coefficient, better in motion performance, 50% larger in elastic modulus than steel, and less than 25% in thermal expansion coefficient. It can still maintain high strength and hardness before 1000°C at high temperature, corrosion resistance, no rust, no magnetism, and can work under oil-free lubrication.

NCE can provide both the GPS Silicon Nitride (Si₃N₄) Ball and the Hot Isostatic Pressing (HIP) Silicon Nitride (Si₃N₄) Ball as needed. Various sizes can be customized. Please contact us for more details. Get a Quote Now! For other ceramic materials, please check our Ceramics catalog page.

Synonyms: hot isostatic pressing (HIP) Si₃N₄ ball, silicon nitride ceramic ball, HIP Si₃N₄ ball, hot isostatic pressing silicon nitride ball

Typical Applications:

The Silicon Nitride Ceramic Ball can be used in various bearings with extreme performance requirements: high-speed/ultra-high-speed bearings, high-precision bearings, vacuum bearings, high/low-temperature bearings, non-magnetic bearings and high-precision ball screws. It can also be used as valve ball, traveling valve, fixed valve and metering ball in chemical pumps, high temperature pumps and metering pumps.

Silicon Nitride Ceramic Balls are generally assembled into hybrid bearings, which can be used in high-tech industries such as aviation and national defense. They can also be widely used in chemical, metallurgy, medical, food, oil field, electronics and other industries.

Compared with steel balls, the main advantages of Silicon Nitride Balls are:

1. They are 59% lighter than the steel balls, which greatly reduces the centrifugal force, rolling and wear of the channel during high-speed and accelerated operation of the bearing.
2. The modulus of elasticity is 44% larger than that of steel, which means that the deformation is greatly reduced than that of steel balls.
3. The hardness is higher than that of steel, and the Hardness Rockwell C (HRC) reaches 78.
4. Low friction coefficient.
5. The coefficient of thermal expansion is 1/4 of that of steel, which can withstand severe temperature changes.
6. It is easy to obtain almost perfect surface finish, and Roughness Average (RA) can reach 4 ~ 6 nm.
7. High temperature resistance: silicon nitride ceramic balls still have high strength and hardness at 1050°C.
8. They never rust and can work without oil lubrication.
9. More resistant to chemical corrosion than steel.
10. No metal pollution.
11. Non-magnetic.
12. Electrical insulation.
13. No adhesive wear.

The combination of these excellent properties makes silicon nitride the first choice for high-performance bearing rolling element materials.

Custom dimensions are available on request.

Inquiries and orders should include the following information:

1. Quantity
2. Dimensions
3. Grade

Standard Packing: Sealed bags in carton boxes. Special package is available on request.