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用X射线衍射法、μDTA法和金相显微镜法测定了Ag-Cu-P(P<23wt-％)三元系富Cu合金相图500℃等温截面以及这三元系的含2wt—％Ag和含6wt-％P的垂直截面。在500℃等温截面中存在三个单相区、三个两相区和一个三相区。Ag,P在Cu中的最大固溶度分别为1.5wt-％和1.2wt-％,Cu在Ag中的最大固溶度为1.8wt-％。存在一个三元共晶反应,三相共晶点成分(wt-％)约为18Ag-74.5Cu-7.5P。
The 500 ℃ isothermal cross section of Ag-Cu-P (P <23wt-%) ternary system Cu-rich alloy was measured by X-ray diffraction, μDTA method and metallographic microscope. And 6wt-% P vertical section. There are three single-phase zones, three two-phase zones and one three-phase zone in a 500 ° C isothermal section. The maximum solubility of Ag and P in Cu are 1.5wt-% and 1.2wt-%, respectively, and the maximum solubility of Cu in Ag is 1.8wt-%. There is a ternary eutectic reaction, the three-phase eutectic point composition (wt-%) is about 18Ag-74.5Cu-7.5P.