无铅钎料与非晶态及晶态Co73Si10B17合金的润湿性  

Wettability of amorphous and crystalline Co73Si10B17 by lead-free solders

作　　者：叶长胜 慈文娟 林巧力[1] 隋然 王建斌[1] 杨帆[1] YE Chang-sheng;CI Wen-juan;LIN Qiao-li;SUI Ran;WANG Jian-bin;YANG Fan(State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metal,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050 [2]兰州工业学院材料工程学院,兰州730050

出　　处：《中国有色金属学报》2020年第6期1329-1337,共9页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51665031,51675256)。

摘　　要：采用平衡润湿法在290~310℃条件下研究纯Sn、SAC307、Sn-0.7Cu这3种软钎料分别与Co73Si10B17非晶箔带晶化前后的润湿行为。通过对表面能和润湿力的测量、对合金体系的表面状态和润湿性进行表征。结果表明:Co基合金的表面自由能远小于其本征值,表明其表面存在氧化膜;钎料的润湿性随着Sn含量的增加而升高,表明该体系润湿机理是一系列复杂的氧化膜去除反应且界面处反应润湿较为剧烈;Co73Si10B17合金的润湿性受界面反应产物和材料表面氧化膜的影响较大,但最终的润湿性由表面氧化膜的去除程度决定。Using wetting balance method,the wettability of Co73Si10B17 in amorphous and crystalline states by Sn and Sn-based lead-free solders(pure Sn,Sn-0.7Cu,Sn-0.3Ag-0.7Cu)were studied in the temperature range of 290−310℃.The surface state and wettability of different systems were represented by measuring the surface energy and wetting force.The results show that oxide films exist in Co-based alloys surface because its surface free energy is less than the intrinsic value.The wettability of the Sn-based solder is enhanced with increasing the Sn content.Thus,the wetting mechanism is a series of complex multiple reactions of removing oxide film and it is exceedingly strong.The final wettability of Co73Si10B17 is affected by the interfacial reaction product and surface oxide film,but it is determined by the degree of removal of the oxide film.

关 键 词：钎料 润湿性 氧化膜 可焊性 

分 类 号：TG113.26[金属学及工艺—物理冶金] TG139[金属学及工艺—金属学]