Y_2O_3/Sn-58Bi复合钎料制备及其性能分析  

Preparation and properties of Y_2O_3/Sn-58Bi composite solders

作　　者：邱希亮[1] 郝成丽 修子扬[1] 黄亦龙 武高辉[1] 何鹏[1] 

机构地区：[1]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 [2]北京华航无线电测量研究所,北京100013

出　　处：《焊接学报》2017年第1期91-94,共4页Transactions of The China Welding Institution

基　　金：先进焊接与连接国家重点实验室资助项目(AWJ-16-M08);新型钎焊材料与技术国家重点实验室资助项目(SKLABFMT-2015-01)

摘　　要：文中通过粉末冶金法制备了Y_2O_3/Sn-58Bi复合钎料.结果表明,添加少量Y_2O_3,对复合钎料熔点影响较小;随着Y_2O_3质量分数提高,复合钎料的密度和显微维氏硬度先升高后降低;复合钎料的润湿角表现出相反的趋势,随着Y_2O_3质量分数提高,复合钎料的润湿角先降低后升高.通过测试Sn-58Bi钎料和0.1%(质量分数)Y_2O_3/Sn-58Bi复合钎料拉伸试样的力学性能发现,添加质量分数为0.1%的Y_2O_3对复合钎料强度稍有提高,但能明显提高复合钎料的延展性,从而解决传统Sn-58Bi钎料较脆的难题.通过观察钎料拉伸断口发现,添加Y_2O_3能够细化复合钎料微观组织,使裂纹沿着断裂方向扩展时受到阻碍,抑制了钎料脆性断裂的趋势.In the present work,the Y_2O_3/Sn-58 Bi composite solders have been prepared by powder metallurgy method.The melting point of the solder was slightly affected by the addition of few amount of Y_2O_3. With the increase of the amount of Y_2O_3,the density and vickers microhardness were firstly increased to the peak value and then decreased with further addition of Y_2O_3,while the contact angle demonstrated the converse tendency. Compared with Sn-58 Bi solder,the strength of the composite solder was slightly increased while the ductility was significantly improved after the addition of 0. 1 wt. % Y_2O_3,solving the brittle problems of the traditional Sn-58 Bi solder. Further observation of the fracture surface indicated that the addition of Y_2O_3 could refine the grain size of the Sn-58 Bi and inhabits the propagation of cracks,which improve the ductility of the Sn-58 Bi.

关 键 词：三氧化二钇 复合钎料 微观组织 力学性能 

分 类 号：G457.14[文化科学—教育学]