Alumina ceramics have good mechanical strength, high hardness and good wear resistance.
Excellent insulation and chemical
stability. Good high temperature resistance, excellent dielectric.
It has high thermal conductivity and good conductivity.
项目/Item | 测试环境Test Condition | 单位符号 Unit Symbol | 95% | 99% | 85% |
主要化学成分 The main chemical ingredient | Al2O3 | Al2O3 | Al2O3 | ||
体积密度 Bulk Density | g/cm3 | 3.6 | 3.89 | 3.4 | |
最大使用温度 Maximum Use Temperature | 1450°C | 1600°C | 1400°C | ||
吸水率 Water absorption | % | 0 | 0 | <0.2 | |
抗折强度 Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 300 |
热膨胀系数Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 7 |
导 电 系 数 Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30.0 | 18 |
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