Application of aluminum nitride cricuble

    Aluminum nitride ceramics is a high-performance engineering ceramics, with very high thermal conductivity, excellent electrical insulation and mechanical strength. Its thermal conductivity can reach 320W/m-K, which is more than ten times that of alumina ceramics, electric insulating property is more than 10^13Ω-cm, and the bending strength can reach 350MPa. these characteristics make aluminum nitride ceramics become the ideal crucible material in high temperature industry.

    Advantages of aluminum nitride ceramic crucible

    1. High thermal conductivity

    The high thermal conductivity of aluminum nitride ceramics makes it an ideal material for crucibles. In the melting or sintering process, high thermal conductivity helps to transfer heat quickly, reduce the temperature gradient, ensure the uniform heating of the material and thus improve the product quality. Meanwhile, the fast heat conduction also helps to reduce energy consumption and improve thermal efficiency.

    2. Excellent electrical insulation

    In the melting and sintering process of high-purity materials such as electronic ceramics and magnetic materials, electrical insulation is an important index of crucible materials. The excellent electric insulation of aluminum nitride ceramics can avoid charge accumulation and discharge phenomenon and ensure the purity and quality of materials.

    3. Good high temperature resistance

    The melting point of aluminum nitride ceramic is up to 2200℃, which has good stability in high temperature environment. This makes the aluminum nitride ceramic crucible able to work for a long time at high temperature and suitable for melting and sintering high melting point materials, such as metal ceramics, hard alloys and so on.

    4. High mechanical strength

    Aluminum nitride ceramic has high mechanical strength and can withstand mechanical load and thermal shock at high temperature. During the use of crucible, the loading, handling and cooling of materials and other operations may cause mechanical stress to the crucible, and the high mechanical strength of aluminum nitride ceramics ensures the durability and reliability of the crucible.

    5. Good chemical resistance

Aluminum nitride ceramics are extremely resistant to most chemicals, including acids, alkaline solutions and molten salts. This makes aluminum nitride ceramic crucibles suitable for melting and sintering processes in a variety of corrosive environments.

    6. Matched coefficient of thermal expansion

Aluminum nitride ceramics have a coefficient of thermal expansion that matches many high temperature materials such as silicon and silicon carbide. This helps to minimize thermal stress, reduce the interaction between the crucible and the material, and increase the life of the crucible.

    In summary: Aluminum nitride ceramic crucible has a promising application in high temperature industry by virtue of its high thermal conductivity, excellent electrical insulation, good high temperature resistance, high mechanical strength, chemical resistance and matched coefficient of thermal expansion. With the continuous development of material science and high-temperature industrial technology, the application of aluminum nitride ceramic crucible will be more extensive, providing strong support for the development of high-temperature industry.