钎焊温度和热处理对钨铜连接性能的影响  

Effects of brazing temperature and heat treatment on properties of tungsten and copper joint

作　　者：屈丹丹[1] 周张健[1] 谈军[1] 钟铭[1] 李化[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]解放军电子工程学院,合肥230037

出　　处：《粉末冶金材料科学与工程》2012年第3期390-394,共5页Materials Science and Engineering of Powder Metallurgy

基　　金：国家自然科学基金资助项目(10805073);国家磁约束核聚变能研究专项(2010GB109000)

摘　　要：采用厚20μm的非晶态Ti-Zr-Ni-Cu钎料,真空钎焊连接用于聚变堆面向等离子体部件的钨和铜铬锆合金,钎焊温度分别为860、880和900℃,对880℃下的钎焊样品进行热等静压（HIP）处理。采用SEM和EDS分析连接接头的形貌和成分,用静载剪切法测量焊接接头强度。测试结果表明在860~880℃下钎焊10 min能够获得较好的连接界面,经880℃钎焊后焊接接头的剪切强度为16.57 MPa,880℃钎焊后HIP处理的试样界面结合强度提高至142.73 MPa,说明真空钎焊后HIP处理可以显著改善接头的结合强度。A rapidly solidified foil-type Ti-Zr-Ni-Cu amorphous filler with a melting temperature of 850 ℃ was used to braze tungsten to copper （Cu-Cr-Zr alloy） for water cooled divertors and plasma facing components application. Brazing experiments were performed at 860, 880 and 900 ℃. Additional hot isostatic pressing （HIP） treatment was conducted on the samples brazed at 880 ℃. The morphology and composition of the W-Cu joints were investigated by SEM and EDS. Shear strength of the joint was measured by static load. The results show that brazing at 860-880 ℃ can acquire a better connection interface. The shear strength tests for W/Cu joints brazed at 880 ℃ show that the average strength of the HIP treated joint is 142.73 MPa, while the joint without HIP treatment is only 16.57 MPa. Therefore, HIP treatment can improve the joint strength obviously.

关 键 词：钨 铜铬锆合金 真空钎焊 非晶态Ti-Zr-Ni-Cu钎料 

分 类 号：TF124.241[冶金工程—粉末冶金]