采用X-射线衍射、扫描电镜和显微金相分析等方法研究了Ag-Pd-Ru-Gd四元系相图的富Ag-Pd-Ru区域(Gd＜25at%).测定了Ag-Pd-Gd-20Ru和Ag-Pd-Gd-50Ru四元系相图的700℃部分等温截面.这两个等温截面上都分别含有3个二相区:Pd(Ag)+(Ru),(Ru)+Ag51Gd14,(Ru)+Pd3Gd;3个三相区:Pd(Ag)+Pd3Gd+(Ru),Pd(Ag)+Ag51Gd14+(Ru),Pd3Gd+Ag51Gd14+(Ru);1个四相区:Pd(Ag)+Pd3Gd+Ag51Gd14+(Ru).这2个截面上都不含有单相固溶区,也未发现新的四元中间相.
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