Brief Introduction Of Activated Alumina Powder
As an important high-tech material, high-purity activated alumina powder has been widely used in high-tech fields such as insulating materials, electronic products, wear-resistant and corrosion-resistant materials, and aerospace due to its high purity, ultra-fine particle size, and excellent physical and chemical properties. High-purity alumina generally refers to ultra-fine powder materials with a purity greater than 99.99% and uniform particle size. It has excellent properties such as high hardness, high strength, wear resistance, corrosion resistance, high temperature resistance, oxidation resistance, good insulation, small thermal expansion coefficient, good thermal shock resistance, and low dielectric loss.
Technical Datas
|
ltem |
RSAA-101 | RSAA-102 | RSAA-103 | RSAA-202 | ||||
| Warranted | Typical | Warranted | Typical | Warranted | Typical | Warranted | Typical | |
| Al₂O₃,% | ≥99.50 | 99.52 | ≥99.50 | 99.6 | ≥99.50 | 99.53 | ≥99.50 | 99.66 |
| K₂O+Na₂O,% | ≤0.20 | 0.13 | ≤0.20 | 0.14 | ≤0.25 | 0.15 | ≤0.15 | 0.10 |
| Fe₂O₃,% | ≤0.05 | 0.02 | ≤0.05 | 0.02 | ≤0.08 | 0.03 | ≤0.05 | 0.02 |
| SiO₂,% | ≤0.15 | 0.08 | ≤0.15 | 0.08 | ≤0.15 | 0.09 | ≤0.15 | 0.07 |
| D50,μm | ≤2.0 | 1.7 | 2.0-3.0 | 2.4 | 3.0-5.0 | 3.5 | 2.0-3.0 | 2.5 |
| Particle
Distribution Characterization |
single-peak |
single-peak |
single-peak |
double-peak |
||||
| α-Al₂O₃ Phase,% |
≥93 |
95 |
≥93 |
95 |
≥93 |
96 |
≥93 |
96 |
| True density g/cm³ |
≥3.93 |
3.96 |
≥3.93 |
3.96 |
≥3.93 |
3.96 |
≥3.94 |
3.97 |
Application Of Activated Alumina Powder
Activated alumina powder is particularly suitable for shaped products and refractory castables, plastics, repair materials, gunning materials, coating materials and other amorphous refractory materials.
1. Ceramic industry: It is one of the main raw materials for ceramic products and is used to produce high-end ceramic products and refractory materials.
2. Metallurgical industry: It is widely used in aluminum smelting, magnesium smelting and other industries, which can improve the quality and output of products.
3. Energy industry: It has important applications in energy fields such as fuel cells and solar cells, which can improve energy conversion efficiency and stability.
4. Other fields: It is also used in glass, coatings, medicine and other fields.