关键词: 石墨, 抗热震性, 孔隙率, 裂纹扩展, 发动机

Abstract: In order to effectively evaluate the thermal shock resistance of graphite, expression of graphite thermal shock resistance is refined by combining engineering calculation and finite element analy⁃ sis. The parameters sensitive to thermal shock factors in material properties were identified and used to evaluate the thermal shock resistance performance of different graphite products. And then the evaluation were verified by the engine test results to provide a reference basis for the development of special graphite.

Key words: graphite, thermal shock resistance, porosity, crack propagation, motor