外加磁场对Sn-9Zn钎料组织、熔化温度及腐蚀性能影响

The Effects of Magnetic Field on Microstructure,Molten Temperature and Corrosion of Sn-9Zn Solder

运用X射线衍射仪、扫描电镜、金属腐蚀检测仪等仪器设备,研究0.5 T外加磁场作用对Sn-9Zn钎料合金组织、熔化温度及腐蚀性能影响。研究结果表明,外加磁场可促进Sn-9Zn钎料合金显微组织细化,熔化温度下降近2℃,腐蚀性能得到改善,分析认为,由于外加磁场可促进Sn-9Zn钎料合金在特定晶面迅速结晶形核,抑制Zn富相形成,从而细化Sn-9Zn钎料组织以及影响钎料合金的熔化温度及腐蚀性能。

Effects on microstructure,molten temperature and corrosion of Sn-9Zn solder alloy was researched under magnetic field of 0.5 T by means of XRD,SEM and metal corrosion detecter etc.The results show that magnetic field can refine microstructure of Sn-9Zn solder alloy,molten temperature decrease by 2 ℃ and corrosion improve as well.It can be concluded that the magnetic field can promote Sn-9Zn solder to crystalize at special plane and restrict formation of rich-Zn phase,which refine microstructure of Sn-9Zn solder and improve its property.