Alumina

参数 单位
化学式 -- Al2O3
代码 -- C799
主要材料 -- Alumina
主要材料纯度 % 99.99
主要辅材 -- --
主要辅材成分 -- --
颜色 -- White
密度 g/cm³ 3.9
吸水率 % --
外观表证 -- Dense
维氏硬度 GPa 18
抗折强度 Mpa 480
弯曲强度 Mpa --
弯曲强度 Mpa 300
抗压强度 Mpa 2450
断裂韧性 MPa m½ 4
杨氏模量 GPa 400
泊松比 -- 0.24
Abrasiveness Blast abrasion amount μm 1.0
最高使用温度(氧化气氛) °C 1500
最高使用温度(保护气氛) °C --
Thermal expansion coefficient RT~200°C *10^-6/°C 5.3
Thermal expansion coefficient RT~400°C *10^-6/°C --
Thermal expansion coefficient RT~600°C *10^-6/°C 7.5
Thermal expansion coefficient RT~800°C *10^-6/°C 8.6
热导率(室温) W/mK 33
Thermal conductivity 400°C W/mK --
Thermal conductivity 800°C W/mK --
Specific heat RT J/kg.K 800
Specific heat 400°C J/kg.K --
Specific heat 800°C J/kg.K --
Thermal Shock Resistance °C 200
Dielectric strength kV/mm 30
Volume resistivity 20°C Ω.cm 1*10^14
Volume resistivity 500°C Ω.cm --
Dielectric loss 1MHz *10^-4 7
Dielectric loss 3GHz *10^-4 --
Dielectric constant 1MHz -- 10
Dielectric constant 3GHz -- 10
Liquid hydrochloric acid Loss --
Liquid hydrochloric acid (1) Loss --
Liquid sulfuric acid Loss --
Liquid sulfuric acid (1) Loss --
Liquid nitric acid Loss --
Liquid caustic soda (sodium hydroxide) Loss --
Liquid caustic soda (sodium hydroxide) (1) Loss --
Gas air or oxygen Loss --
Gas air or oxygen (1) Loss --
Gas vapor Loss --
Gas nitrogen Loss --
Gas carbon monoxide Loss --
Gas carbon dioxide Loss --
Gas hydrogen Loss --
Gas htdrofluoric acid Loss --
Gas chlorine Loss --
Gas bromine Loss --
Gas iodine Loss --
Gas ammonia Loss --
Gas hydrogen sulfide Loss --
Solid body sulfur Loss --
Solid body carbon graphite Loss --
Permeability Km --
Susceptibility Xm --
20%盐酸(置入72小时) WT Loss [mg/cm²/day] -0.3
盐酸 20% (置入24小时) WT Loss [mg/cm²/day] 0.0
20%浓度硫酸(置入72小时) WT Loss [mg/cm²/day] -0.3
20%浓度硫酸(置入24小时) WT Loss [mg/cm²/day] 0.0
61%浓度硝酸(置入72小时) WT Loss [mg/cm²/day] 0.0
61%浓度硝酸(置入24小时) WT Loss [mg/cm²/day] 0.0
85%浓度磷酸(置入72小时) WT Loss [mg/cm²/day] -0.3
85%浓度磷酸(置入24小时) WT Loss [mg/cm²/day] 0.0
20%浓度烧碱(置入72小时) WT Loss [mg/cm²/day] 0.0
20%浓度烧碱(置入24小时) WT Loss [mg/cm²/day] 0.0
47%浓度氢氟酸(置入72小时) WT Loss [mg/cm²/day] -0.5
应用特性 -- --
备注 -- --
Features & applications (cn) -- --
Remarks (cn) -- --