(1. 宁夏大学 化学化工学院, 银川 750021; 2. 宁夏大学 物理电气信息学院, 银川 750021)
摘 要: 综述了Nb-Al系金属间化合物作为高温结构材料的最新研究进展和发展趋势。对目前国内外Nb-Al系金属间化合物及其复合材料的制备工艺、组织结构控制和力学性能的研究现状进行评述。结果表明：通过延性相增韧、合金化、层状结构设计、复合材料设计等方法，可以显著改善Nb-Al金属间化合物的室温脆性、抗氧化能力、高温强度及抗蠕变性能。Nb-Al系金属间化合物的研究方向应集中发展以Nb3Al及NbAl3金属间化合物为基体，以SiC、Al2O3及TiC等陶瓷相为增强相强化的陶瓷−铌基合金复合材料。
关键字: Nb-Al系; 金属间化合物; 复合材料; 高温结构材料
（1. School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China;
2. School of Physics and Electrical Information Engineering, Ningxia University, Yinchuan 750021, China）
Abstract:The recent research progress and prospects of Nb-Al intermetallics compounds for structural applications were discussed. The processing and mechanical properties of the Nb-Al intermetallics and their composites were reviewed. The results show that the ductile phase toughening, alloying, microlamination and composite design can improve the brittle fracture at room temperature, oxidation resistance, high-temperature strength and creep resistance. The research on Nb-Al system materials should be focused on the ceramics phase (SiC, Al2O3 and TiC) reinforced Nb3Al and NbAl3 matrix composites.
Key words: Nb-Al system; intermetallics; composite; high-temperature structure materials
