高温下熔融SnAgCu-xTi在SiO2表面的润湿行为  

Wetting Behavior of Molten SnAgCu-xTi on SiO2 Surface Under High Temperature

作　　者：王建斌[1] 林巧力[1] 隋然[2] 慈文娟 叶长胜 WANG Jianbin;LIN Qiaoli;SUI Ran;CI Wenjuan;YE Changsheng(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Science and Engineeering,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]兰州工业学院材料科学与工程学院,兰州730050

出　　处：《材料导报》2020年第10期10114-10119,共6页Materials Reports

基　　金：国家自然科学基金(51665031,51675256);甘肃省基础研究创新计划(17JR5RA107);甘肃省高校协同创新团队建设基金(2017C-07);省杰出青年科学家基金(1506RJDA087)。

摘　　要：采用改良座滴法研究了高真空、800~900℃条件下熔融Sn0.3Ag0.7Cu(SAC)-x Ti(x=0%、1%、3%,质量分数)在SiO 2表面的润湿行为。研究结果表明:在SAC中添加少量的Ti后,可以显著提高SAC在SiO 2表面的润湿性。当Ti浓度为3%时,Ti未被完全溶解,这是因为随着Ti浓度的增加,在Ti表面会形成一层高熔点的Sn-Ti金属间化合物,进而阻碍Ti的进一步溶解。液固界面反应产物为Ti 5Si 3和TiO,铺展动力学可用反应产物控制模型描述;在铺展过程中,快速铺展阶段首先析出Ti 5Si 3和TiO,线性铺展阶段仅析出TiO。该体系的最终润湿性取决于界面反应产物和界面上Ti-O吸附的共同作用。The wetting of SiO 2 by molten Sn0.3Ag0.7Cu(SAC)-x Ti(x=0wt%,1wt%,3wt%)was studied by using the modified sessile drop method at 800-900℃under a high vacuum.The small addition of Ti into SAC alloy can improve wettability,significantly.Because the Sn-Ti intermetallics with high melting point covered Ti addition and blocked further dissolution of Ti,and thus Ti cannot be dissolved completely when the nominal concentration of Ti was 3wt%.The reaction products at liquid/solid interface are Ti 5Si 3 and TiO.The spreading dynamics can be described by reaction product control model.The spreading may be coupled firstly with the precipitation of Ti 5Si 3 and TiO together meanwhile be affected by the dissolution of Ti addition,and then the precipitation of TiO alone.The final wettability was determined both by the wetting character of reaction products and also Ti-O adsorption at interface.

关 键 词：改良座滴法 高温 润湿行为 氧化物 界面 连接 

分 类 号：TB333[一般工业技术—材料科学与工程]