定制高温耐火莫来石-堇青石陶瓷烧结匣钵

项目		单位	Steatite ceramic	95 Al2O3	96 Al2O3
Physical Characteristics	Bulk density	g/cm³	2.7	3.6
Physical Characteristics	Water absorption	%	0	0
Mechanical Characteristics	抗弯强度	兆帕	145	320	340
Mechanical Characteristics	Hardness Vickers	Gpa	5.7	12.2	13.5
Mechanical Characteristics	Elastic modulus	Gpa	120	280	320
Mechanical Characteristics	Poisson’s ratio	–	0.21	0.22	0.23
Thermal Characteristics	Linear expansion coefficient	(20-5000C) 10-6/℃	7.9	7.1	7.2
Thermal Characteristics	导热系数	w/(m.k)	2.5	16	24
Thermal Characteristics	Specific Heat	10-3J/(kgK)	0.75	0.78
Electrical Characteristics	Dielectric constant(1MHZ)	–	6.2	9	9.4
Electrical Characteristics	Dielectric loss angle	*10-4	18	15	5
Electrical Characteristics	Dielectric strength	*106V/m	18	12	15

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