What are the application fields of high-strength and high-insulation alumina ceramics?

Release time：2024-09-11click：0

Alumina ceramic is a ceramic material based on aluminum oxide (Al2O3). Precisely because the main component of ceramics is alumina, it has many special properties.

Depending on the content of alumina, alumina ceramics are divided into ordinary ceramics and high-purity alumina ceramics. Because alumina ceramics are used in different places and regions, the required purity is different. Common high-purity alumina content is 95%-99.99%, which is what we often call 95 porcelain, 99 porcelain, etc.

Alumina ceramic is a very wear-resistant precision ceramic material and is widely used in various industries. The main molding methods of alumina ceramic products are: Dry pressing, isostatic pressing, injection molding and tape casting, Different product shapes, sizes, complex shapes and precision products require different molding methods. Alumina ceramic products sintered at high temperatures can only be processed using diamond grinding processes. Alumina ceramic materials have extremely high hardness and wear resistance, strong corrosion resistance, high temperature resistance, corrosion resistance and biological inertness. In addition, alumina sintered at high temperatures can be highly polished and is widely used in many fields.

The dielectric strength of alumina ceramics is much higher than that of other oxide ceramics, and there is a certain relationship between the dielectric strength of alumina ceramics and its purity. The higher the purity of the aluminum oxide, the higher its insulating properties, and of course the higher the price.

Alumina ceramics with wear resistance, high resistance, high strength and high insulation properties are widely used in high-end fields such as instrumentation, food and medicine, solar photovoltaics, mechanical appliances, laser semiconductors, petroleum machinery, automobile and military industry, aerospace and other high-end fields. Common products include ceramic insulating rings, ceramic insulating sheets, ceramic substrates, ceramic arms, ceramic plungers, ceramic dispensing valves, etc.

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