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研究了四种C/C复合材料的磁电阻与测试位向的关系。其中每种试样具有不同结构的预制体,并经过2400℃~2800℃热处理。实验结果表明,这四种材料的磁电阻-测试位向曲线形状完全不同,而同一材料的曲线形状基本相同,并且与热处理测试温度和磁场强度无关。经傅里叶函数分析,材料的磁电阻-测试位向曲线形状与其预制体纤维的方向有关。
The relationship between magnetoresistance and test orientation of four C / C composites was studied. Each sample has a prefabricated structure of different structure and is heat treated at 2400 ° C to 2800 ° C. The experimental results show that the magneto-resistance curves of these four kinds of materials are completely different from each other, while the same material has the same curve shape and has no relation with the heat treatment temperature and magnetic field strength. According to the Fourier function analysis, the material’s magneto-resistance curve is related to the direction of the fiber of the preform.