(1. 寧夏大學(xué) 化學(xué)化工學(xué)院, 銀川 750021; 2. 寧夏大學(xué) 物理電氣信息學(xué)院, 銀川 750021)
摘 要: 綜述了Nb-Al系金屬間化合物作為高溫結(jié)構(gòu)材料的最新研究進(jìn)展和發(fā)展趨勢(shì)。對(duì)目前國內(nèi)外Nb-Al系金屬間化合物及其復(fù)合材料的制備工藝、組織結(jié)構(gòu)控制和力學(xué)性能的研究現(xiàn)狀進(jìn)行評(píng)述。結(jié)果表明：通過延性相增韌、合金化、層狀結(jié)構(gòu)設(shè)計(jì)、復(fù)合材料設(shè)計(jì)等方法，可以顯著改善Nb-Al金屬間化合物的室溫脆性、抗氧化能力、高溫強(qiáng)度及抗蠕變性能。Nb-Al系金屬間化合物的研究方向應(yīng)集中發(fā)展以Nb3Al及NbAl3金屬間化合物為基體，以SiC、Al2O3及TiC等陶瓷相為增強(qiáng)相強(qiáng)化的陶瓷−鈮基合金復(fù)合材料。
關(guān)鍵字: Nb-Al系; 金屬間化合物; 復(fù)合材料; 高溫結(jié)構(gòu)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
