Ceramic bonding and joint s strengtherung through forming intermetallic compounds in situ
来源期刊：中国有色金属学报(英文版)2004年第1期
论文作者：邹贵生 吴爱萍 任家烈 杨俊 赵文庆
文章页码：93 - 98
Key words：Ceramic;bonding ;forming of intermetallic compounds in situ;elevated temperature strength
Abstract: The transient liquid phase diffusion bonding of Si3N4 ceramics with Ti/Ni/Ti and Al/Ti/Al multiple interlay-ers was performed.The formation of intermetallic compounds in situ and their effects on the joints strengths were investrgated.The Ti/ Ni/Ti interlayers produce NiTi and Ni3Ti layers with considerable room temperature ductility and high elrvated temperature strength to strengthen the bonding zone metals and the joints.The joints with 142 MPa shear strength at room temperature and 88 MPa shear strength at 800℃ are achieved under appropriate parameters, respectively. Al/Ti/Al interlayers transform into a special bonding zone metal with a large amount of Al3Ti particles and a small amount of Al-based solid solution, and in this case, the joints are strengthened significantly.Their strengths at room temperature and 600 ℃ reach 90 MPa and 30 MPa, respectively.
