摘要
采用电场辅助加热技术实现了Ti_3AlC_2/Zr的低温连接,并对其界面结构进行了研究。在TAC/Zr连接对中,Al的扩散激活能只有6.9 k J/mol,远低于传统的热压方法连接Ti_2AlC-Zr时Al的扩散激活能。TiC做过渡层时可以有效地抑制Al从Ti_3AlC_2一侧向Zr合金中扩散,并且可以进一步降低连接温度。研究发现,通过调控TiC涂层的计量比以调控连接界面的性能是完全有可能的。
Electric-current-aided heating was employed to realize the Ti3AlC2/Zr joining at lowtemperature and the interface structure was studied.The diffusion activation energy of Al element inthe prepared TAC/Zr joining couple is only6.9kJ/mol,being much lower than that in Ti2AlC/Zrjoining couple by traditional pressure sintering,38kJ/mol.When TiC coating is used as an interlayer,it was found that the TiC interlayer can efficiently block the diffusion of Al from Ti3AlC2side into Zralloy without the deterioration of joining behavior.The results also show that the joining temperaturefor TiC@TAC/Zr couple was further reduced.While,the TiC interlayer have revealed the promisingrole to control the interface reaction through the regulation of ratio of Ti and C in the coating.
作者
杨辉
卢博
杨贤金
史文
周小兵
李鹏
黄峰
黄庆
YANG Hui;LU Bo;YANG Xian-Jin;SHI Wen;ZHOU Xiao-Bing;LI Peng;HUANG Feng;HUANG Qing(Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Science,Ningbo 315201, China;School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China)
出处
《现代技术陶瓷》
CAS
2017年第1期48-56,共9页
Advanced Ceramics
基金
国家自然科学基金(91426304
91426304)
中科院跨学科创新团队
中国科学院战略重点研究项目(XDA03010305)
浙江省自然科学基金(LY15E020007)
