碳化硅的主要技术性能? Main Performance Index of Silicon Carbide |
????? 性能? Property |
单位 Unit |
数值 Numerial Value |
????? 纯度? Purity |
% |
≥92 |
????? 密度? Density |
g/cm3 |
3.0~3.1 |
????? 抗拉强度? Anti-tensile strength |
Mpa |
2.75×10 |
????? 抗弯强度? Anti-bending strength |
Mpa |
300-460 |
????? 抗压强度? Anti-compression strength |
Mpa |
275-280 |
????? 硬度? Hardness |
HS |
105 |
????? 弹性模量? Elastic Modulus |
Gpa |
350-420 |
????? 热导率? Heat Guide Rate |
w/cm.k |
4.2 |
????? 热膨胀系数? Coefficient of heat expansion |
×10-6 / ℃ |
4-4.5 |
????? 耐热温度(大气中)?? Heat Resistance (in the atmosphere) |
℃ |
1600-1800 |
????? 热冲击系数? Thermal impact coefficient |
cal/cm.sec |
47 |
????? 耐酸性? Acid resistance |
|
3-5 times higher than the usual WC |
????? 泊桑比? Poisson ratio |
|
0.15 |