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Microstructure and interfacial reactions of Sn-Au-Ag solder joints on Cu and Ni substrates

Release Time:2019-03-10  Hits:

Indexed by: Conference Paper

Date of Publication: 2016-08-16

Included Journals: Scopus、SCIE、CPCI-S、EI

Page Number: 534-537

Key Words: Au-Sn solder; Microstructure; Wettability; Interface reaction

Abstract: Novel Sn-rich Au-Sn solder alloys were designed using the cluster-plus-glue-atom (CPGA) model and calculation of phase diagrams (CALPHAD) method, and the melting behavior, microstructure, wettability and interfacial reactions of the designed Sn-Au-Ag solders were systematically investigated. The melting temperature of Sn-Au-Ag solder is among the range of 205.86 to 206.63 degrees C. The microstructure of the Sn-Au-Ag bulk solders consists of the AuSn4 and Ag3Sn phases dispersed in beta-Sn matrix. The Sn-Au-Ag solders have the better wettability on Ni substrate than that on Cu substrate.

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