在Ag-Pd-Gd, Ag-Pd-Ru, Ag-Ru -Gd和Pd-Ru-Gd三元系合金相图的基础上, 采用X射线衍射, 差热分析、扫描电镜和显微金相分析等方法研究了Ag-Pd-Ru-Gd(x( Ru) =5%, x(Gd)<25%)四元系相图的700℃等温截面. 结果表明: 该截面上包含有2个单相区, 即Pd(Ag)和Pd 3Gd; 4个两相区, 即Pd(Ag)+(Ru), Pd(Ag)+Pd3Gd, (Ru)+Ag51Gd14, (Ru)+Pd 3Gd; 3个三相区, 即Pd(A g)+Pd3Gd+(Ru), Pd(Ag)+Ag51Gd14+(Ru), Pd3Gd+Ag51Gd14 +(Ru); 1个四相区, 即Pd(Ag)+Pd3Gd+Ag51Gd14+(Ru). 未发现新的四元中间相.
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