Plate Calcined Alumina, also known as PWA or WCA, is an alumina powder with a flaky structure. This structure gives it a series of excellent physical and chemical properties
Chemical composition
| Chemical | Guarantee Value | Typical Value |
| Al2O3 | ≥99.0% | 99.36% |
| SiO2 | ＜0.2% | 0.017% |
| Fe2O3 | ＜0.1% | 0.03% |
| Na2O | ＜0.6% | 0.35% |
Physical properties
| Material | α-Al2O3 |
| Color | White |
| Specific gravity | ≥3.9g/cm3 |
| Mohs’Hardness | 9.0 |
Characteristics of Plate Calcined Alumina:
1. High hardness and wear resistance: Plate Calcined Alumina is an ideal wear-resistant material, which can maintain stable performance under harsh working conditions.
2. Good thermal stability: In high temperature environments, Plate Calcined Alumina can maintain a stable structure, is suitable for the manufacture of high-temperature ceramic products.
3. Excellent thermal conductivity: Its unique flaky structure helps to conduct heat quickly.
4. Good chemical stability: It has excellent resistance to most chemicals such as acids and alkalis, ensuring the stability of the material in complex chemical environments.
5. Easy to disperse and shape.
Application cases:
1. Electronic ceramics field
In the field of electronic ceramics, flat alumina is widely used in the manufacture of key components such as integrated circuit substrates, packaging materials, and heat sinks due to its excellent thermal conductivity and chemical stability.
2. Wear-resistant ceramics
In mechanical equipment in mining, metallurgy, cement and other industries, wear is one of the main causes of equipment failure. The high hardness and wear resistance of flat alumina make it an ideal material for the preparation of wear-resistant ceramics.
3. High-temperature structural ceramics
In the fields of aerospace, energy and other fields, the demand for high-temperature structural ceramics is growing. These components can maintain stable performance in extremely high temperature environments, providing a strong guarantee for the safe flight of aerospace vehicles and the efficient operation of energy conversion equipment.