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Aluminum nitride ceramics have excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxic and silicon matching thermal expansion coefficient and a series of excellent characteristics, is a new ceramic material with excellent comprehensive performance, wihch can be applied to:

1. Ceramic substrate. Among the existing ceramic materials that can be used as substrate materials, aluminum nitride ceramics have high thermal conductivity, good thermal shock resistance, and still have good mechanical properties at high temperatures.

2. Aluminum nitride can be applied to the sintering of structural ceramics, and the prepared aluminum nitride ceramics not only have good mechanical properties, high flexural strength, high hardness, but also high temperature and corrosion resistance.

Since the preparation process and performance of aluminum nitride ceramics are directly affected by the characteristics of powder, in order to obtain high-performance aluminum nitride ceramics, it is necessary to have a powder with high purity and good sintering activity as raw materials.