Alumina Plate/Board Serials / Industrial Ceramics / Fu Qiang Special Ceramic Manufacturing

Alumina Plate/Board Serials

For this plate/board,mainly the Alumina content is 75-99%.It has the features of high reliability,high density power,high thermal conductivity,high insulation and cycling performance.Dimensions can be formed be mould stamping or laser cutting,is used in thick film circuit,large-scale integrated circuit,hybrid IC,semiconductor package,chip resistor and other electronic industry fields.

Specifications

Name	Test method	Unit	Corundum-mullite A₃S₂-2	A-75	A-95	A-96	A-99
Density		G/cm³	≧2.80	≧3.20	≧3.60	≧3.70	≧3.70
Air impermeability			---	---	Pass 合格	Pass 合格	Pass 合格
Liquid permeation			Pass 合格	Pass 合格	Pass 合格	Pass 合格	Pass 合格
Linear expansion coefficient	20℃--100℃	X10^-6/℃	≦8	≦6	---	---	---
	20℃--500℃	X10^-6/℃	---	---	6.5—7.5	6.5—7.5	6.5—7.5
	20℃--800℃	X10^-6/℃	---	---	6.5—8	6.5—8	6.5—8
Flexural strength	1MHz 20℃		≦7.5	≦9.0	9—10	9—10	9—10.5
	500℃		---	---	9—10	9—10	---
	10GHz 20℃		---	---	9—10	9—10	9—10.5
Dissipation factor	1MHz 20℃	X10^-4	≦20	≦10	≦4	≦4	≦2.5
	500℃	X10^-4	---	---	30--40	30--40	---
	10GHz 20℃	X10^-4	---	---	≦10	≦10	≦6
Bulk resistance	100℃	Ω.cm	≧10¹²	≧10¹²	≧10¹³	≧10¹³	≧10¹³
	300℃	Ω.cm	---	---	≧10¹⁰	≧10¹⁰	≧10¹⁰
	500℃	Ω.cm	---	---	≧10⁸	≧10⁸	≧10⁹
Thermal shock resistance			---	---	pass	pass	pass
Breakdown strength		KV/mm	≧15	≧20	≧18	≧15	≧15
Chemical stability	1:9HCI	mg/cm²	---	---	≦7.0	≦7.0	≦0.7
Chemical stability	10%NaOH	mg/cm²	---	---	≦0.2	≦0.2	≦0.1
Average grain size		μm	---	---	15--30	---	---
Usage			As large device ceramic	As high mechanical strength parts	As shell of pipe or circuit board substrate	As refrigeration substrate plate	As shell of pipe or circuit board substrate

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