Nb/Nb_5Si_3微叠层材料及其制备技术  

Characteristics and Preparation Technologies of Nb/Nb_5 Si_3 Microlaminate

作　　者：牟仁德[1] 申造宇[1] 王占考 

机构地区：[1]北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室,北京100095

出　　处：《航空材料学报》2016年第3期124-131,共8页Journal of Aeronautical Materials

基　　金：国家863计划基金项目(2015AA034403)

摘　　要：Nb/Nb_5Si_3合金是未来最具潜力的超高温结构材料,实现该材料的结构微叠层化是一种新颖的材料设计思路和制备方法。Nb/Nb_5Si_3微叠层材料是将Nb和Nb_5Si_3按一定的层间距及层厚比以ABABAB型交互重叠结构形成的多层材料,其几种典型的制备技术包括热压、等离子喷涂、磁控溅射和电子束物理气相沉积(EB-PVD)。其中EBPVD是一种最适合工程应用的Nb/Nb_5Si_3微叠层材料制备方法,结构和功能复合、纳米化叠层、高韧化工艺是EBPVD技术制备Nb/Nb_5Si_3微叠层材料的发展方向。Nb/Nb_5Si_3 superalloy has the most potential in the application of future high temperature structures.Realization of microstructure lamination for this material is a new material design and preparation method.Characteristics and prevailing preparation technologies of Nb/Nb_5Si_3 microlaminate,including hot pressing,plasma spaying,magnetic sputtering and electron beam physical vapor deposition（EB-PVD） are reviewed.It is pointed out that EB-PVD is a promising technology for producing Nb/Nb_5Si_3 microlaminate from the engineering application point of view.Structure and function compound,nano-laminating and toughening are the developing directions in the future electron beam physical vapor deposited Nb/Nb_5Si_3 microlaminate field.

关 键 词：Nb/Nb_5Si_3 微叠层 电子束物理气相沉积 超高温结构材料 

分 类 号：TG146.416[一般工业技术—材料科学与工程]