Alumina Ceramic (Al2O3) structural components are widely used in the mechanical industry due to their exceptional physical and chemical properties. With a hardness second only to diamond, alumina ceramics excel in environments with high friction, impact, and wear. Their excellent chemical stability allows them to resist corrosion from various acids, bases, and salts, making them ideal for use as linings in chemical reactors, as well as in pipelines and containers where corrosion resistance is essential.
Alumina ceramics maintain stable mechanical properties and structural integrity even at high temperatures, boasting a high melting point of approximately 2050°C. The smooth surface of alumina ceramics, combined with their low friction coefficient, helps reduce wear between mechanical components. Additionally, compared to metal materials, alumina ceramics have a lower density, which helps reduce the weight of parts.
Preparation Process:
- Raw Material Processing: Utilize high-purity alumina powder, adding appropriate additives to enhance flowability and sintering performance.
- Forming: Use dry pressing, isostatic pressing, or injection molding techniques.
- Sintering: Sinter at 1600-1700°C.
- Post-Processing: Perform surface polishing and grinding as subsequent treatments.
Process Control: The grain size of alumina significantly impacts final performance; therefore, precise control of sintering time and temperature is essential.
