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项目Item/类别Grade |
BNH |
BNC |
BNP |
|
BN纯度Purity |
>99.5% |
复合composite |
>96 |
|
密度/Density |
1.9±0.5 |
2.95 |
2.0 |
|
**工作温度/Max operating |
850 in atmosphere |
1000ℂ/p> |
850ℂ/p> |
|
2200 in inert gas |
2000ℂ/p> |
1150-1800ℂ/p> |
||
硬度/Hardness |
4 |
105 |
16 |
|
屈服强度/flexural strength |
3000Psi |
21000Psi |
9800Psi |
|
热传导率/Heat conductivity |
63W/mk |
38 |
55 |
|
热膨胀?coefficient thermal expansion |
0.6(x10-6/K) |
3.5(x10-6/K) |
4.0(x10-6/K) |
|
体积电阻/volume resistance |
>1015(Ωcm) |
- |
>1015(Ωcm) |
|
Composite |
Oxygen(%) |
<0.4 |
<14 |
<2.0 |
Carbon |
0.02 |
2.0 |
0.02 |
|
Calcium | 0.04 | 0.02 | 2 | |
B2O3 | 0.2 | 1.0 | 0.4 | |
Zr | - | 30 | - | |
Si | - | 4.5 | - |
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