Effect of Electric Current on Diffusion of Aluminum in Ti3AlC2 into Zirconium Alloy  

作　　者：卢博 YANG Xianjin ZHOU Jie JING Lei SHEN Lu ZHOU Xiaobing DU Shiyu 黄庆 

机构地区：[1]School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China [2]Ningbo Institute of Material Technology &Engineering, Chinese Academy of Sciences, Ningbo 315201, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2017年第3期645-649,共5页武汉理工大学学报（材料科学英文版）

基　　金：Supported by National Natural Science Foundation of China(Nos.91226202,91426304);CAS Interdisciplinary Innovation Team Project

摘　　要：The spark plasma sintering（SPS） method was used to study the mechanism of reaction interface between Zr and Ti3AlC2 with electric current going through it. It was found that electric current greatly reduced the bonding temperature of Zr and Ti3AlC2. By the micro-structure analysis of the interface through SEM/EDS, it was found that Al atoms diffused from the Ti3AlC2 substrate into the Zr side and reacted with Zr to form the Zr-Al compounds at the interface, which is the strengthening mechanism of Ti3AlC2-Zr bonding. The thickness of reaction layers（Zr-Al alloy） was from 0.879 to 13.945 mm depending on different sintering condition. Current direction, heating rate, soaking time, pulse patterns all influenced the diffusion of Al atoms which affected the joining quality of Zr and Ti3AlC2.The spark plasma sintering（SPS） method was used to study the mechanism of reaction interface between Zr and Ti3AlC2 with electric current going through it. It was found that electric current greatly reduced the bonding temperature of Zr and Ti3AlC2. By the micro-structure analysis of the interface through SEM/EDS, it was found that Al atoms diffused from the Ti3AlC2 substrate into the Zr side and reacted with Zr to form the Zr-Al compounds at the interface, which is the strengthening mechanism of Ti3AlC2-Zr bonding. The thickness of reaction layers（Zr-Al alloy） was from 0.879 to 13.945 mm depending on different sintering condition. Current direction, heating rate, soaking time, pulse patterns all influenced the diffusion of Al atoms which affected the joining quality of Zr and Ti3AlC2.

关 键 词：MAX phase diffusion bonding SPS electric current effect 

分 类 号：TG146.414[一般工业技术—材料科学与工程]