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Effect of Ag on the properties of solders and brazing filler metals

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Abstract

Ag is used as a beneficial alloy element in no matter solders or brazing filler metals. Obviously, the addition of Ag has a positive function on melting temperature, wettability, mechanical property and conductivity of filler metals. Therefore, Ag is still widely used in many researches and production in spite of that Ag is very expensive. Respectively, three kind of typical solders (Sn–Ag–Cu, Sn–Zn and Sn–Bi) and brazing filler metals (Ag–Cu–Zn, Cu–P, and Zn–Al) have been chosen for illustration. This article summarizes research status on the studying of Ag-contained solders and brazing filler metals, also analyses influence rules of Ag addition on the change of filler metals’ physical property, microstructure as well as mechanical property. Moreover, the problems and difficulties in the process of study Ag-contained solders and brazing filler metals have been presented. Synchronously, some suggestions have been put forward which may solve the problems and difficulties mentioned above, which provides theory guide for the follow-up study of Ag-contained solders and brazing filler metals, and their prospects are also looked ahead.

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Acknowledgments

This project is supported by National Natural Science Foundation of China (Grant No.51375233) and supported by the Key Laboratory of Advanced Welding Technology of Jiangsu Province, China (JSAWT-14-04). This work is also supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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  1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    He Wang & Song-bai Xue

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  1. He Wang
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Correspondence to Song-bai Xue.

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Wang, H., Xue, Sb. Effect of Ag on the properties of solders and brazing filler metals. J Mater Sci: Mater Electron 27, 1–13 (2016). https://doi.org/10.1007/s10854-015-3747-z

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  • DOI: https://doi.org/10.1007/s10854-015-3747-z

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