微量铅在目前的无铅工艺生产制造过程中广泛存在,并可对无铅钎料组织性能产生重要影响.运用X射线衍射仪、扫描电镜及其附属能谱仪、超微硬度测试仪等仪器设备,研究微量铅对Sn9Zn钎料组织及微米压痕性能影响.结果表明:不同含量的Pb能使Sn9Zn钎料组织得到细化;当Pb的质量分数达到0.8％时,相比Sn9Zn钎料,压痕深度相对下降12％,压痕硬度增大22％,达到0.31GPa,钎料蠕变性能得到改善.
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