Thermal shock resistance and erosion resistance of TiB₂ multiphase ceramic composites

Abstract

The thermal shock resistance and anti-aluminum erosion of TiB₂-BN multiphase ceramics composites were studied. The experimental results show that the TiB₂-BN multiphase ceramic possesses a good thermal shock resistance at high temperatures (1000, 1200, 1400, 1500°C), with the increasing in thermal shocking temperature, the electro-conductivity of TiB₂-BN ceramics increases. The metal aluminum has a great influence on the properties of TiB₂-BN ceramics and the main reason is that the aluminum reacts seriously with BN. It is suggested that the content of BN should be reduced to the greatest extent.

Keywords

thermal shocking resistance / erosion resistance / microstructure / mechanism

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