从成分设计和性能(主要是室温断裂韧性、高温强度和高温抗氧化性)等方面综述了铌固溶体--铌硅化物基共晶自生复合材料(RMICs)的最新研究进展以及目前仍存在的问题.成分体系从二元向多元化发展,主要有Nb-Si、Nb-W-B-Si、Nb-Mo-Hf-Si、Nb-Ti-Cr-Al-Si、Nb-Mo-W-Ti-Si、Nb-Mo-W-Hf-C-Si等.该材料的室温断裂韧性接近40MPa·m1/2,蠕变强度达到180MPa(1773K/100h).通过合金化和涂层防护两种方法都可以改善材料的综合性能.
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