连续纤维增强SiC基复合材料界面相力学及抗氧化改性研究进展

综述了近年来SiC基复合材料的裂解碳（PyC）及其衍生物、BN及其衍生物、新型界面相和复合界面相的力学及抗氧化性能改性效果、相关影响因素及不足之处，比较了几类常见的界面相制备工艺。其中，PyC界面相力学改性效果好但抗氧化性差，添加B元素仍难以克服其本征不耐氧化性；BN界面相综合性能佳，但具有中温脆性且不防潮；复合界面相优势众多，但热膨胀系数失配、化学相容性差等问题不可忽视；新型界面相在性能或制备方式上难以兼顾。未来的发展方向为完善性能数据库和损伤机理、探索更多新型界面相类型，以及深入挖掘现有界面相制备工艺的潜力等。

Research progress in the mechanical properties and oxidation resistance modification effect of interphase of SiC matrix composites reinforced with continuous fibers

The mechanical and oxidation resistance modification effects, the related influencing factors, and the shortcomings of pyrocarbon （PyC） and its derivatives, BN and its derivatives, new style interphases, and compound interphases were reviewed, and several common interphases preparation technologies were also briefly compared. Among them, the PyC interphase had excellent mechanical modification but no oxidation resistance, and adding B element was still difficult to overcome its intrinsic oxidation resistance. The comprehensive performance of BN interphase was preferably good, but brittle at medium temperature and was not moisture-proof. Lots of advantages of composite interphase were presented, but the problems such as mismatch of thermal expansion coefficient and poor chemical compatibility can not be ignored. The new interphase was hard to be considered in terms of properties or preparation methods. The future development direction is to improve the performance database and damage mechanism, to explore more new types of interfacial phases, and to tap the potential of existing interfacial phase preparation processes.