耐磨 99% 氧化铝抛光用中国氧化铝陶瓷专用部件

项目		单位	99 Al2O3
Physical Characteristics	Bulk density	g/cm³	3.9
Physical Characteristics	Water absorption	%
Mechanical Characteristics	抗弯强度	兆帕	360
Mechanical Characteristics	Hardness Vickers	Gpa	15.6
Mechanical Characteristics	Elastic modulus	Gpa	370
Mechanical Characteristics	Poisson’s ratio	–	0.23
Thermal Characteristics	Linear expansion coefficient	(20-5000°C) 10-6/0°C	8
Thermal Characteristics	导热系数	w/(m·k)	32
Thermal Characteristics	Specific Heat	×10-3J/(kg·K)	0.9
Electrical Characteristics	Dielectric constant (1MHZ	–	9.9
Electrical Characteristics	Dielectric loss angle	×10-4	1
Electrical Characteristics	Dielectric strength	×10-6V/m	15

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