高温下熔融SnAgCu-<i>x</i>Ti在SiO<sub>2</sub>表面的润湿行为

doi:10.11896/cldb.19040036

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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.

Key words： modified sessile drop method high temperature wetting behavior oxides interface joining

Published: 26 April 2020

CLC number:

TB333

Fund:This work was supported by National Natural Science Foundation of China (51665031, 51675256), the Program of Innovation Groups of Basic Research of Gansu Province (17JR5RA107), the Foundation of Collaborative Innovation Teams in College of Gansu Province (2017C-07), Provincial Fund for Distinguished Young Scientists (1506RJDA087).

Corresponding Authors: Qiaoli Lin, professor, School of Materials Science and Engineering, Lanzhou University of Technology. Member of the Welding Committee of the Mechanical Engineering Society, the National Natural Science Foundation of China, the Engineering Science Division II Fund Project Evaluation Expert, and the IIW International Welding Engineer Certification Professional Examiner. He has hosted 7 projects including the National Natural Science Foundation of China (National Science Fund), the Doctoral Fund of the Ministry of Education, the Gansu Provincial Outstanding Youth Fund, and the School-Enterprise Cooperation Horizontal Project. He has participated in three key projects and projects of the National Natural Science Foundation of China. As the first author or communication contact, he published more than 20 papers in SCI and 4 articles in EI. The
published papers include Acta Mater., the top magazine in engineering technology (ranked first in the international metallurgical field), covering the three major databases of Elsevier, Wiley and Springer. As a reviewing expert, he has been invited to the internationally renowned academic journal J. Alloys Compd., Composite B, JMR, Mater. Des., etc. The Scientific World J., guest editor of Scanning special issue. His research interests are high temperature wettability of metals/ceramic and Interface behavior during dissimilar metal bonding.

About author:: Jianbin Wangreceived his B.S. degree in Lanzhou University of Technology in 2017. He is currently pursuing his M.S. degree at School of Materials Science and Engineering, Lanzhou University of Technology under the supervision of Prof. Qiaoli LIN. His research has focused on the wettability of metal/ceramic systems.

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Cite this article:

WANG Jianbin,LIN Qiaoli,SUI Ran, et al. Wetting Behavior of Molten SnAgCu-xTi on SiO₂ Surface Under High Temperature[J]. Materials Reports, 2020, 34(10): 10114-10119.

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http://www.mater-rep.com/EN/10.11896/cldb.19040036 OR http://www.mater-rep.com/EN/Y2020/V34/I10/10114

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