Platelet calcined alumina 3um 9um 15um platelet aluminum oxide
Platelet Calcined Alumina is a specialized form of alumina (aluminum oxide, Al₂O₃) that has been thermally treated (calcined) and engineered to have a platelet-like morphology. This unique structure gives it enhanced properties, making it suitable for a variety of industrial applications. Below are some key applications of platelet calcined alumina:
PWA is a white calcined alumina abrasive powder consisting of plate-shaped crystals of aluminum oxide (Al2O3) with a purity of over 99.0%.
- Chemically inert
- Will not be corroded by either acids or alkalines
- Excellent heat-resistant properties
- Greater number of uniform grades than available from most manufacturers
The particle size distribution is tightly controlled and produces a very fine lapped surface allowing a wide range of applications, such as:
- Lapping agent for:
- Silicon
- Optical materials
- Liquid crystal
- Stainless steel
- Other materials
- Filler material for coatings
- Material for lapping cloth or paper
- Compounding agent combined with a metal or synthetic resin
or semiconductor materials such as semiconductor silicon wafers, the application of plate aluminum oxide can reduce the grinding time, greatly improve the grinding efficiency, reduce the loss of the grinding machine, save labor and grinding costs, and increase the grinding pass rate. The quality is close to well-known foreign brands.
The work efficiency of the glass bulb grinding of the picture tube is increased by 3-5 times;
The qualified product rate is increased by 10-15%, and the qualified product rate of semiconductor wafers reaches more than 99%;
Grinding consumption is 40-40% less than ordinary alumina polishing powder;
Chemical composition Platelet Calcined Alumina
| Al2O3 | ≥99.0% |
| SiO2 | <0.2 |
| Fe2O3 | <0.1 |
| Na2O | <1 |
Physical properties
| Material | α-Al2O3 |
| Color | White |
| Specific gravity | ≥3.9g/cm3 |
| Mohs’Hardness | 9.0 |
What is the platelet calcined alumina
Platelet calcined alumina refers to a specific form of alumina (aluminum oxide, Al₂O₃) that has been processed to exhibit a platelet-like morphology. This material is typically produced through a specialized calcination process, which involves heating aluminum hydroxide or other alumina precursors to high temperatures to induce phase transformations and morphological changes.
Key Characteristics:
- Platelet Morphology: The alumina particles have a flat, plate-like shape, which can enhance certain properties such as mechanical strength, thermal resistance, and wear resistance in composite materials.
- High Purity: Calcined alumina is usually of high purity, making it suitable for advanced applications in ceramics, refractories, and electronics.
- Thermal Stability: The material exhibits excellent thermal stability, making it useful in high-temperature environments.
- Chemical Inertness: Alumina is chemically inert, providing resistance to corrosion and oxidation.
Applications:
- Ceramics: Used in the production of advanced ceramics where enhanced mechanical properties are required.
- Refractories: Employed in refractory materials due to its high melting point and thermal stability.
- Composites: Incorporated into metal or polymer matrices to improve strength and wear resistance.
- Abrasives: Utilized in abrasive applications due to its hardness and durability.
- Electronics: Used in substrates and insulators for electronic components.
Production Process:
- Precursor Preparation: Aluminum hydroxide or other alumina precursors are prepared.
- Calcination: The precursor is heated to high temperatures (typically above 1000°C) in a controlled environment to form alumina.
- Morphological Control: Specific conditions during calcination and subsequent processing are controlled to achieve the desired platelet morphology.
Advantages:
- Enhanced Mechanical Properties: The platelet shape can lead to improved fracture toughness and strength in composite materials.
- Improved Thermal Properties: Better thermal shock resistance due to the unique morphology.
- Versatility: Can be tailored for various high-performance applications.
Overall, platelet calcined alumina is a high-performance material with a range of industrial applications, particularly where enhanced mechanical and thermal properties are required.
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