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High Quality Alumina Powder 99.99 Aluminum Oxide for Polishing
AL2O3 alumina polishing powder is a white abrasive made from industrial alumina powder (Al2O3) with a content of over 98% and a small amount of iron oxide and silicon oxide. It is a white abrasive which is melted at high temperature. Its hardness is slightly higher than that of brown corundum and its toughness is slightly lower. It is made by smelting and cooling above 2000 degrees in arc, grinding and shaping, removing iron by magnetic separation, and sieving into many kinds of granularity. It is compact in texture, high in hardness, and sharp in shape.
The micro powder of white fused alumina from Haixu Abrasives are produced with acid wash and water pickled process, so it will get a more purity powder. Comparing with the ones with milling production, Acid pickled WFA powder has better size distribution which is suitable for making ceramic membrane tubes, honing stone, even for skin cleaning.
| Typical Chemical composition(F600) | ||
| AL2O3 | 99.20% | |
| SiO2 | 0.16% | |
| NA2O | 0.34% | |
| Fe2O3 | 0.08% | |
| CaO | 0.04% | |
| Typical physical properties | ||
| Hardness: | Mohs:9.0 | |
| Maximum service temperature: | 1900 ℃ | |
| Melting Point: | 2250 ℃ | |
| Specific Gravity: | 3.95g/cm3 | |
| Volume density | 3.6g/cm3 | |
| Bulk density(LPD): | 1.55-1.95 g/cm3 | |
| Color: | White | |
| Particle shape: | Angular | |
| Available size: | ||
| FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 | |
| JIS | 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# 10000# | |
1.Luminescent materials: rare earth trichromatic phosphors used as the main raw material long afterglow phosphor, PDP phosphor, LED phosphor;
2.Transparent ceramics: used as fluorescent tubes for high pressure sodium lamp, electrically programmable read-only memory window;
3.Single Crystal: for the manufacture of ruby, sapphire, yttrium aluminum garnet;
4.High strength high alumina ceramic:as the substrate used in the manufacture of integrated circuits, cutting tools and high purity crucible;
5.Abrasive:manufacture the abrasive of glass, metal, semiconductor and plastic;
6.Diaphragm: Application for the manufacture of lithium battery separator coating;
7.Other: as an active coating, adsorbents, catalysts and catalyst supports, vacuum coating, special glass materials, composite materials, resin filler, bio-ceramics etc.
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