Suzhou Manyoung New Materials Co.,Ltd
Suzhou Manyoung New Materials Co.,Ltd
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High Hardness and Good Quality Hip Silicon Nitride Precision Ball
Description:
Silicon Nitride Ceramic Balls Is a superhard material, which has lubricity and wear resistance. It does not react with other inorganic acids except for hydrofluoric acid, moreover,it has strong corrosion resistance and high temperature oxidation resistance.And it can also resist cold and heat shock, heat up to more than 1000 degrees in the air, rapid cooling and then rapid heating, and will not break.
Technical Parameters:
| Mechanical behavior | Unit | Al2O3 | SiC | Si3N4 | ZrO2 |
| Colour | ------- | Light yellow | black | black | white,black |
| Density | g/cm3 | 3.95 | 3.15 | 3.2 | 6 |
| Bending strength | MPa | 300～400 | 400～500 | 800～1200 | 950～1200 |
| Elastic modulus E | GPa | 380 | 350 | 300-320 | 210 |
| Poisson's ratio | 0.22 | 0.14 | 0.26 | -------- | |
| Hardness | Hv | 1800 | 2000～2500 | 1400～1700 | 1100～1300 |
| HRC | 80 | 85～90 | 75～80 | 70～75 | |
| Fracture toughness | MPa·m1/2 | 3.0～4.0 | 3.0～4.0 | 5.0～7.0 | 8.0～10.0 |
| Maximum use temperature | ℃ | 1000 | 1300 | 400 | 400 |
| Thermal expansion coefficient | 10-6/℃ | 8.4 | 4 | 3.3 | 10.3 |
Advantages:
1. High Strength over a wide temperature range.
2. High Fracture toughness.
3. High Hardness.
4. Outstanding Wear Resistance ,both impingement and frictional modes.
5. Good Thermal Shock Resistance.
Application:
1. High precision ceramic bearing.
2. High temperature bearing.
3. Vacuum bearing.
4. Non-magnetic bearing.
5. chemical pump.
6. The heat pump.
7. Ceramic valve ball.
8. Measure the ball.
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