|
性能 Technical data |
单位 | GCrl5 | 9Crl8 | Si3N4 | Zr02 |
|
密度 ρ Density |
g/cm3 | 7.8 | 7.9 | 3.2 | 6 |
|
热膨胀 α Coefficient of expansion |
10-6/℃ | 11 | 17 | 3.2 | 10.5 |
|
弹性模 IE modulus of elastcity |
GPa | 208 | 200 | 320 | 210 |
|
泊松比 μ Poisson ratio |
0.3 | 0.3 | 0-26 | 0.3 | |
|
硬度 HV Hardness |
Mpa | 800 | 700 | 1700 | 1300 |
|
抗弯强度 δBFlexural strength |
Mpa | 2400 | 2600 | 900 | 1000 |
|
抗压强度 Compressive strength |
Nm/cm2 | ||||
|
韧性 Kc Impact strength |
W/mk | 20 | 25 | 7 | 11 |
|
热导率入 λ Thermal conductivity |
mm2/m | 30-40 | 15 | 3.5 | 3.5 |
|
比电阻 Ω specific resistivity |
J/KgK | 1 | 0.75 | 1018 | 1015 |
|
比热 specific heat |
.℃ | 450 | 450 | 800 | 400 |
|
使用温度 MAX permissible sewice temperature |
120 | 150 | 1000 | 800 | |
|
耐腐蚀 anti—corrossion |
无 none | 弱 weak | 强 strong | 强 strong | |
|
应力循环次数（50%破坏机率） NO.of stress circle(50%destroy) |
10*106 | 10*106 | 50*106 | 50*106 | |
|
流动接触疲劳失效形式 Destroy model |
剥落 peel off | 剥落 peel off | 剥落peel off | 剥落/断裂peel off/break | |
| 磁性 Anti—magnetism | 有 none | 有 none | 无 good | 无 good | |
|
尺寸稳定性 Dimension stability |
差 not good | 差 not good | 好 good | 好 good | |
|
绝缘性 Insulate properties |
不绝缘 not good | 不绝缘 not good | 好 good | 好 good |
