Hexagonal boron nitride (h-BN) has a typical two-dimensional flake structure, so the anisotropy of h-BN grains caused by directional arrangement cannot be ignored when studying the thermal vibration resistance of materials under thermal cycling. In this paper, h-BN-matrix textured ceramics prepared with different holding time were selected, and the effects of thermal vibration temperature difference and thermal cycles on the phase and thermal vibration resistance of h-BN-matrix textured ceramics were studied. The results show that under the condition of high-frequency thermal cycling, the residual strength ratio (RSR) of BN-based textured ceramics is closely related to the holding time and showing obvious anisotropy. At the same time, there is a thermal vibration temperature range in which the internal stress will change from relief to re-accumulation.

六方氮化硼（h-BN）具有典型的二维片状结构，因此在研究热循环下材料的抗热振性时，不能忽略由定向排列引起的h-BN晶粒的各向异性。本文选取了不同保温时间制备的h-BN-基织构陶瓷,研究了热振温差和热循环对h-BN-基织构陶瓷的相和热振阻力的影响。结果表明，在高频热循环条件下，残余强度比（RSR）BN基织构陶瓷的温度与保温时间密切相关，表现出明显的各向异性。同时，还有一个热振动温度范围，在该温度范围内，内应力会从释放变为重新累积。