99.998% high-purity alumina series powders are mainly used for LED artificial sapphire crystals, advanced ceramics, PDP phosphors, high-pressure sodium lamps, new luminescent materials, special ceramics, advanced coatings, trichromatic pigments, catalysts and other high-performance materials.
Feature of High Purity Aluminium Powder For Sapphire
1.99.998% high purity aluminium oxide
2.2000T annual production capacity for this High Purity Alumina Powder For Sapphire
3.Professional research & lab team
4.Professional inspection equipments
5.ISO9001:2008 certificates
6.GDMS material analysis
7.It owns good uniform particle size distribution, fluidity, strong strength, high mechanical strength, corrosion resistance, not easy for scratches, narrow particle size distribution, high quality surface and bright lusterafter grinding.
In our fatory, we do strict product packaging, transportation process to ensure product quality, thoughtful after-sales service and provide customers with high quality products.
The following are technical indicators for powder:
|
Item |
Crystal form |
Purity (%)≥ |
Size d50(μm) |
Surface area(m2/g) |
Bulk density( g/cm3) |
Content (ppm)≤ |
K | Na | Ca | Mg | Fe | Si | Ti |
|
4XR5 |
γ-AL2O3 |
99.998 |
35-45 |
70-120 |
0.60-0.70 |
2 |
10 |
3 |
1 |
3 |
10 |
1 |
1 |
|
4BR5A |
α-AL2O3 |
99.998 |
45-55 |
2-10 |
0.75-0.85 |
2 |
10 |
3 |
1 |
3 |
10 |
1 |
1 |
|
4BR |
γ- AL2O3 |
99.99 |
0.1-0.6 |
≥100 |
0.10-0.18 |
3 |
6 |
8 |
2 |
5 |
15 |
2 |
3 |
|
4BRA |
α- AL2O3 |
99.99 |
0.4-0.8 |
≥5 |
0.25-0.32 |
3 |
5 |
7 |
2 |
5 |
15 |
2 |
3 |
Application of 99.99% High Purity Alumina Powder For Sapphire:
1. This high purity alumina powder is often used as a vehicle for chromatographic analysis.
2. Using this high purity alumina is the reason why metal aluminum is not easily corroded in the air. Pure metal aluminum reacts easily with oxygen in the air, creating a thin layer of aluminum oxide film that covers the aluminum surface exposed to air. This layer of aluminum oxide film prevents aluminum from being oxidized. The thickness and properties of this oxide film can be enhanced by a process known as anodizing (anode anti-corrosion).
3. Aluminum is a good conductor of electricity and heat, while alumina is an insulator of electricity and heat. The crystal form of alumina is high in hardness and is suitable for use as an abrasive material and a cutting tool.
4. It can be used for emergency braking devices of high-speed railway trains (spray high-purity alumina powder to the rail to increase rail friction)
5. High Purity Alumina Powder For Sapphire is applied in sapphire crystals to get good surface and bright luster.
Characteristics of aluminium oxide for Sapphire:
1. High purity alumina with alumina content greater than 99%
2. High temperature resistance, normal use at 1600 ° C, short-term 1800 ° C
3. Resistance to quenching and heat generation, not easy to burst
4. Sapphire adopts grouting molding. It will get high density with high Purity Alumina Powder For Sapphire.
5.Chemically stable, acid and alkali resistant
FAQ:
Q：Could you offer free samples for our test?
A：Yes. We could offer you free samples after technical confirmation.
Q：Do you company have ISO certificate?
A：That's for sure!
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