Application of white fused alumina in reinforced fiber materials.
The application of white fused alumina in the field of reinforced fiber materials is mainly reflected in the following aspects:
1. Fiber-reinforced ceramic composites
White fused alumina fibers are added to the ceramic matrix as a reinforcing phase to improve the fracture toughness and impact resistance of the composite material through the fiber toughening mechanism. This reinforcement method can enable ceramic materials to maintain excellent structural stability under high temperature or high pressure environments (such as metal melt filtration scenarios). For example, foam ceramic filters used for aluminum liquid and steel liquid filtration can withstand high temperature erosion.
2. High-temperature refractory fiber products
White fused alumina fibers are processed into lightweight fiber materials through special processes and are widely used in the insulation layer of high-temperature kilns (such as kiln walls and kiln roofs). Its high melting point (2050℃) and low thermal conductivity make it an ideal insulation material that can withstand extreme environments above 1600℃, while also having mechanical strength and thermal shock resistance.
3. Functionalized fiber coating technology
White fused alumina micropowder is made into a fiber-reinforced coating using processes such as plasma spraying, which can significantly improve the surface hardness and wear resistance of the base material. This type of coating performs well in chemical equipment, high-temperature reactors and other scenarios, and is particularly suitable for industrial parts that require corrosion resistance and wear resistance.
4. Development of high-performance composite materials
The composite application of white fused alumina fiber with resin and metal matrix is expanding. Its high purity (Fe2O3 <0.1%) and chemical inertness make it a potential functional reinforcement material in precision industries such as semiconductors and photovoltaics. For example, in electronic ceramic substrates, white fused alumina improves device reliability by optimizing thermal conductivity and insulation.
Note: The strengthening effect of white fused alumina fiber mainly depends on its high hardness (Mohs 9.0), high temperature resistance and chemical stability. It has important potential in the future research and development of composite materials in the fields of aerospace, energy equipment, etc.