Wetting Behavior of Molten SnAgCu-xTi on SiO2 Surface Under High Temperature
WANG Jianbin1, LIN Qiaoli1, SUI Ran2, CI Wenjuan1, YE Changsheng1
1 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou 730050, China 2 School of Materials Science and Engineeering, Lanzhou Institute of Technology, Lanzhou 730050, China
Abstract: The wetting of SiO2 by molten Sn0.3Ag0.7Cu(SAC)-xTi (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 Ti5Si3 and TiO. The spreading dynamics can be described by reaction product control model. The spreading may be coupled firstly with the precipitation of Ti5Si3 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.
王建斌, 林巧力, 隋然, 慈文娟, 叶长胜. 高温下熔融SnAgCu-xTi在SiO2表面的润湿行为[J]. 材料导报, 2020, 34(10): 10114-10119.
WANG Jianbin, LIN Qiaoli, SUI Ran, CI Wenjuan, YE Changsheng. Wetting Behavior of Molten SnAgCu-xTi on SiO2 Surface Under High Temperature. Materials Reports, 2020, 34(10): 10114-10119.
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