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Zirconia fused alumina
Zirconia fused alumina is produced by putting rich aluminum, zirconium materials and additives in electic furances, smelting with high temperature above 2000°C, cooling down with special technology, and compacting with Barmac plastic, which has the characteristics of tenacious texture, dense structure and high strength.
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Properties
Chemical Composition(%)
|
Items |
Al2O3 |
ZrO2 |
TiO2 |
Fe2O3 |
SiO2 |
|
ZA25 |
68-72 |
24-30 |
≤1.5 |
≤0.5 |
≤1.0 |
|
ZA40 |
55-57 |
35-44 |
≤1.5 |
≤0.5 |
≤1.0 |
Physical Properties
|
Crystal Form |
Monoclinic,tetragonal system |
|
Reaction with acid and alkali |
no |
|
Reaction with carbon |
Forming carbide since 1650C |
|
Color |
Grey |
|
True Density |
4.20g/cm3 |
|
Bulk Density |
2.18g/cm3 |
|
Moh's hardness |
9.0 |
|
Knoop hardness |
1450-2000kg/cm2 |
|
Melting point |
1900C |
|
Maximum service temperature |
1700C |
|
Specific heat capacity(cal/g.C) |
0.2205(50-500C) |
|
Heat conductivity |
0.2718 cal/cm2.sec.C |
|
Linear expansivity(X10-6) |
6.82(100-700C) |
Application
- Making zircon fused alumina brick and building materials.
- Used for making bonded abrasives products,and process of grinding,sandblasting,surface treatment of metal products and other materials.
- With good melt erosion resistance,Zirconia fused alumina has good grinding effect on steel,iron casting,heat resistant steel and other alloy materials.
- Zirconia fused alumina can be made for heavy duty Zirconia fused alumina grinding wheel,snagging,cutting disc,Fiber disc,grinding rails,high speed abrasive belts etc.
- Used for making coated abrasives products.
- Used for making lapping paste,polishing wax,emery cloth,sandpaper etc.
