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.
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Physical Properties |
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Hardness: micro |
21600-22600kg/mm3 |
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Hardness: Mohs |
9.0 min |
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Specific Gravity |
3.95-3.97g/cm3 |
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Bulk Density |
1.65-2.05g/cm3 |
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Particle Shape |
Blocky, Sharp |
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Color |
white |
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Chemical compositions |
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Al2O3 |
99.40min |
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SiO2 |
0.15max |
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Na2O |
0.28max |
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Fe2O3 |
0.05max |
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CaO |
0.03max |