基于制备钨钼复合靶材的SPS烧结连接  

SPS sintering & joining based on preparation of tungsten-molybdenum composite target

作　　者：黄昊 赵晶晶 韩翠柳 杨新宇[1] 潘亚飞 张久兴[1] HUANG Hao;ZHAO Jing-jing;HAN Cui-liu;YANG Xin-yu;PAN Ya-fei;ZHANG Jiu-xing(College of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学材料科学与工程学院

出　　处：《材料工程》2020年第3期84-91,共8页Journal of Materials Engineering

摘　　要：采用放电等离子烧结(SPS)制备钨(W)和钛锆钼(TZM)连接件。通过高能球磨和调节温度烧结出高致密度纯W块体,相对密度可达97.0%以上。在制备的纯W块体表面铺置TZM合金粉末,烧结TZM的同时对W和TZM进行连接,实现了异种金属块体与粉末的一步烧结连接。研究烧结温度和降温速率对W/TZM合金接头的微观组织和力学性能的影响。结果表明:W与TZM结合良好,烧结温度在1400~1600℃范围内时,W/TZM接头的剪切强度随烧结温度的升高而增大;在相同烧结温度下,采用快速冷却方式获得的接头剪切强度高于缓慢冷却接头的;当烧结温度为1600℃并采取快速冷却降温时,W/TZM接头的剪切强度达到最大,为159.7 MPa。High energy ball milling and spark plasma sintering(SPS) were used to make high density pure W bulk, the relative density of samples can reach more than 97.0%. TZM alloy powder was laid on the surface of the W bulk, SPS was used to sinter TZM and join W with TZM at the same time. This experiment realized the joining between W bulk and TZM powder without interlayer. The effects of sintering temperature and cooling rate on the microstructure and mechanical properties of W/TZM alloy joints were investigated.The results show that W is well joined with TZM alloy, and there are no holes, microcracks and unwelded defects in the interface. When the sintering temperature is within the scope of 1400-1600 ℃, W/TZM joints shear strength increases with the increase of sintering temperature. The shear strength of the joints obtained by rapid cooling is higher than that of the joints with slow cooling at the same sintering temperature. When the sintering temperature is 1600 ℃ and taken rapid cooling, the shear strength of joint is higher than that of the other samples, the maximum shear strength is 159.7 MPa.

关 键 词：SPS 钨 TZM合金 烧结 靶材 扩散连接 

分 类 号：TG456.9[金属学及工艺—焊接]