钛铝基合金渗硅层结构及抗高温氧化性能初探  

Investigation on Microstructures and Oxidation Resistance of Siliconized Coatings of Ti-48Al Alloy

作　　者：梁伟[1] 石巨岩[1] 马晓霞[1] 赵兴国[1] 边丽萍[1] 

机构地区：[1]太原理工大学材料科学与工程学院,太原030024

出　　处：《材料热处理学报》2003年第2期16-19,共4页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助 (50 1710 4 6 );山西省自然科学基金资助( 2 0 0 2 10 51)

摘　　要：研究了钛铝基合金固体渗硅后的渗层结构、抗高温循环氧化性能。结果表明 :钛铝基合金固体渗硅后表层形成主要由Ti5Si3 、Al2 O3 和Al3 Ti、TiSi2 、Si构成的复合渗层 ,该复合渗硅层有效阻止了高温氧化过程的进行 。The microstructures and the cyclic oxidation resistance of the siliconized coatings of Ti 48Al alloy have been studied.SEM analysis and X ray diffraction analysis show that the siliconized coatings are mainly composed of Ti 5Si 3 and Al 2O 3 in addition to some of Al 3Ti, TiSi 2 and Si. These composite coatings exhibited an excellent positive effect for cyclic oxidation resistance, and the cyclic oxidation resistance of Ti 48Al alloy was remarkably improved.

关 键 词：钛铝基合金 金属间化合物 化学热处理 氧化 渗层 

分 类 号：TG174.44[金属学及工艺—金属表面处理] TG146.2[金属学及工艺—金属学]