Product Description
1,About product
High purity alumina has become one of the important special functional materials because of its excellent physical and chemical properties. Because of the true density, Mohs hardness, wear resistance, corrosion resistance, heat insulation, easy sintering, and good mechanical properties, etc., showing that the conventional materials with optical, electrical, magnetic, thermal and mechanical properties, is one of the tip materials production led sapphire substrate material, lithium battery protection membrane, integrated circuits on ceramic substrates, green lighting with an important basis for trichromatic fluorescent powder, automotive sensors, tape additive, catalyst, coating carrier, semiconductor and liquid crystal display, transparent high pressure sodium lamp, precision instrument and aero optical devices materials and in the production of new materials in the 21st century the largest and highest value, use the most widely.
2,Compositions
| High-purity Al2O3 |
| Items |
Compositions |
| GNAO-04 |
GNAO-045 |
GNAO-05 |
| crystal form |
α |
α |
α |
| |
Appearance |
White crystal powder |
| Powdery |
Particle size distribution, % |
particle size( D10)<1.5um ≥ |
10 |
10 |
10 |
| particle size( D50)<10um ≥ |
30 |
30 |
30 |
| particle size( D90)<30um ≥ |
50 |
50 |
50 |
| Apparent density, g/cm3 |
0.30~0.60 |
0.30~0.60 |
0.30~0.60 |
| Tap density g/cm3 |
0.50~0.90 |
0.50~0.90 |
0.50~0.90 |
| Specifi c surface area m2/g |
4~8 |
4~8 |
4~8 |
| Pie |
Appearance |
White cylindrical |
| Sintering density g/cm3 |
3.2 |
3.2 |
3.2 |
| Massive |
Appearance |
White crystal material |
|
|
| Density g/cm3 |
3.5~3.8 |
3.5~3.8 |
3.5~3.8 |
| |
|
Si |
25 |
20 |
5 |
| Content of impurities ( ×10-4), % ≤ |
Na |
10 |
10 |
5 |
| Mg |
10 |
10 |
3 |
| Cu |
10 |
10 |
3 |
| Fe |
20 |
10 |
5 |
| Ca |
10 |
10 |
3 |
| Cr |
10 |
10 |
3 |
| Pb |
5 |
5 |
3 |
| Zn |
4 |
4 |
3 |
| Ti |
3 |
3 |
3 |
| : |
| Note: Product size according to user requirements processing. |
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