White aluminum oxide was made from the high quality alumina by melting above 2200℃ in the electric arc furnace and cooling.
White aluminum oxide is white with the main crystal phase alpha-Al2O3.
White aluminum oxide produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.
Physical and Chemical Composition of White Aluminum Oxide
|
Physical Properties |
|
|
Hardness: micro |
21600-22600kg/mm3 |
|
Hardness: Mohs |
9.0 min |
|
Specific Gravity |
3.95-3.97g/cm3 |
|
Bulk Density |
1.65-2.05g/cm3 |
|
Particle Shape |
Blocky, Sharp |
|
Color |
white |
|
Chemical compositions |
|
|
Al2O3 |
99.40min |
|
SiO2 |
0.15max |
|
Na2O |
0.28max |
|
Fe2O3 |
0.06max |
|
CaO |
0.03max |
Applications of white aluminum oxide
—Bonded abrasive tool
—Coated abrasive tool
—Reusable abrasive
—Grinding,lapping & polishing medium
—Raw material for foundry ,coating or paints
—Resin/Ceramic grinding wheels & grinding media
