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    罗忠兵

    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:材料科学与工程学院
    • 学科:材料无损检测与评价. 材料学
    • 联系方式:0411-84706049
    • 电子邮箱:zhbluo@dlut.edu.cn

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    Study on the Microstructure and the Shear Strength of Sn-0.7Cu-xZn

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    论文类型:会议论文

    发表时间:2009-08-10

    收录刊物:EI、CPCI-S、Scopus

    页面范围:810-813

    摘要:The effects of 0.3 wt.% Zn and 1 wt.% Zn addition on the melting point, the microstructure and the shear strength of Sn-0.7Cu were investigated. With small amount of Zn addition, the melting point decreased a little, and refined microstructure was observed especially for Sn-0.7Cu-1Zn and the fraction of eutectic region increased. Cu-Zn intermetallic compounds (IMCs) were detected in Sn-0.7Cu-1Zn at the phase boundary between beta-Sn and eutectic region. Shear strength of solders increased with strain rate lineally in log-log plot. The strength of Sn-0.7Cu-1Zn was much higher than that of Sn-0.7Cu, which was similar to that of Sn-0.7Cu-0.3Zn. Ductile fracture was observed in all solders.