Alumina for sapphire

Short Description:

Molecular formula: AL2O3
CAS NO.:1344-28-1
EINECS NO.:215-691-6
Molecular Weight: 102
Melting point: 2050 ℃
Boiling point: 2980ºC
Specific gravity: AL2O3,α type 2.5-3.95g / cm3
Form:α type, y-type, La- type
Features:white odorless powder
high purity, the process can be controlled according to the particle size, the particle size distribution uniform

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c0f85347 Applicable Equipment

Luminescent materials: rare earth trichromatic phosphors used as the main raw material long afterglow phosphor, PDP phosphor, LED phosphor;
Transparent ceramics: used as fluorescent tubes for high pressure sodium lamp, electrically programmable read-only memory window;
Single Crystal: for the manufacture of ruby, sapphire, yttrium aluminum garnet;
High strength high alumina ceramic:as the substrate used in the manufacture of integrated circuits, cutting tools and high purity crucible;
Abrasive:manufacture the abrasive of glass, metal, semiconductor and plastic;
Diaphragm: Application for the manufacture of lithium battery separator coating;
Other: as an active coating, adsorbents, catalysts and catalyst supports, vacuum coating, special glass materials, composite materials, resin filler, bio-ceramics etc.

c0f85347 Features

Model Powder Cake(piece) Granular(Ball)
Shape White loose powder White cake White granular
The average primary particle diameter (um) 0.2-3 - -
The specific surface area (m / g) 3-12 - -
Bulk Density (g / cm) 0.4-0.6 - 0.8-1.5
The bulk density (g / cm) - 3.2-3.8 -
Al2O3 content (%) 99.999 99.999 99.999
Si(ppm) 2 2 2
Na(ppm) 1 1 1
Fe(ppm) 1 1 1
Ca(ppm) 1 1 1
Mg(ppm) 1 1 1
S(ppm) 1 1 1
Ti(ppm) 0.3 0.3 0.3
Cu(ppm) 0.8 0.8 0.8
Cr(ppm) 0.5 0.5 0.5
According to different requirements can provide powder, granule, block, pie or column type

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