Characteristics and Preparation Technologies of Nb/Nb₅Si₃ Microlaminate

• Main Authors: MU Rende, SHEN Zaoyu, WANG Zhankao
• Format: Article
• Language: zho
• Published: Journal of Aeronautical Materials 2016-06-01
• Series: Journal of Aeronautical Materials
• Subjects: Nb/Nb₅Si₃; Microlaminate; EB-PVD; high temperature structure material
• Online Access: http://jam.biam.ac.cn/CN/10.11868/j.issn.1005-5053.2016.3.013

Nb/Nb₅Si₃ 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/Nb₅Si₃ 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/Nb₅Si₃ 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/Nb₅Si₃ microlaminate field.