Fused Silica:
 
Natural high purity quartz its microstructure at high temperature becomes the amorphous structure of the fused silica.
 
Molten particles and silicon powders are selected from high quality fused silica, through special crushing grinding process, the products are with high purity, controllable particle size distribution.
 
The main characteristics of fused silica are:
l High temperature resistance, good whiteness, melting point 1750 ℃.
l Excellent low electrical insulation.
l High hardness, high resistance to wear.
l Low expansion coefficient.
l Chemical properties of stability, in addition to react with hydrogen fluoride ether and alkali, does not react with any other material.
 
Areas of application:
The products are mainly used in large scale integrated circuit and epoxy molding compound materials, high temperature silica ceramic, PV crucible, precision casting, high class refractory material, optical fiber, organic silicon, coating, optical glass and artificial silica stone.
 
Main Technical Index for Fused Silica
 

Item		Unit	Typical Values
Moisture		%	0.06
Loss on Ignition(LOI)		%	0.11
SiO2		%	>99.9
Fe		ppm	<20
Al		ppm	<20
Na		ppm	<10
Ca		ppm	<10
Mg		ppm	<10
Density		x 10³ kg/m³	2.2
HV		-	7
Aqueous Extract	EC	μs/cm	<3.0
	CL	ppm	<2.0
	PH	-	6-7
Particle Size		Grain Product	60mm- 75μm(200mesh)
		Micronized Product	75μm(200mesh)-          1μm(12500mesh)

 
(Index can be adjusted according to clients’ requirement)