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 section with P up to 23 wt-% and the verticalsections containing 6 wt-%P and 2 wt-%Ag of Cu-rich Ag-Cu-P ternary system weredetermined by X-ray diffraction, μDTA and metallography. The isothermal sectioncontains 3 single-phase regions, 3 two-phase regions and 1 three-phase region. Themaximum solubility of Ag or P in Cu is 1.5 or 1.2 wt-% respectively, while thatof Cu in Ag is 1.8 wt-%. One ternary eutectic reaction of composition, by wt-%,18Ag-74.5Cu-7.5P exists at 650℃.
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