先驱体法制备的SiC纤维是高性能陶瓷基复合材料(CMC)的关键增强材料. 在过去三十年里, 已发展了三代SiC纤维. 本文综述了三代SiC纤维制备工艺、组成结构和性能的发展变化情况, 分析了SiC纤维的耐高温、抗氧化、模量和高温抗蠕变性能与其组成和结构的相互关系, 总结了提高纤维性能的主要方法.
The polymer-derived SiC fiber is one of the most important reinforcing materials for high performance ceramic matrix composites (CMC). Three generations of SiC fibers have been developed over the past thirty years. In this article, the preparing methods, compositions, microstructures and performances of three-generation fibers are reviewed. Furthermore, the relationships are discussed between microstructure and the main properties of the fibers, such as high-temperature-resistance, modulus and creep resistance. And, as a summary, some improving methods for the properties of SiC fibers derived from precursor are summarized.
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