white aluminum oxide as Glaze

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

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

Typical Size

 

MICROGRITS
Grit designation Mean grain size ds50-value in μm
F 230 53.0 ± 3
F 240 44.5 ± 2
F 280 36.5 ± 1.5
F 320 29.2 ± 1.5
F 360 22.8 ± 1.5
F 400 17.3 ± 1
F 500 12.8 ± 1
F 600 9.3 ± 1
F 800 6.5 ± 1
F 1000 4.5 ± 0.8
F 1200 3.0 ± 0.5
F 1500 2.0 ± 0.4
F 2000 1.2 ± 0.3
F 3000 0.8±0.2

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