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 |
Applications:
- Stripping of surfaces with oxide or paint residues
- Deburring of steel surfaces
- Preparation to coatings such as paint or galvanic coatings
- Preparation to improve rubber-to-metal anchorage type bonding
- Engraving on stone, marble, granite, etc.
- Satin finishing of glass, metals, plastics, etc.
- Finishing of castings.
- Correction of defects in parts