富金的Au-Ag-Zr三元合金研究

An Investigation of the Gold-rich Alloys in Au-Ag-Zr Ternary System

在Au-Ag、Au-Zr和Ag-Zr二元系相图研究的基础上,采用X射线衍射分析、电子探针(EPMA)和显微金相方法测定了Au-Ag-Zr三元系富金区域的700℃等温截面。发现在该等温截面上的富Au-Ag侧,沿着Au-Ag二元匀晶系存在一个长条形的单相区Au(Ag)或Ag(Au),确定在该部分等温截面上共有4个单相区:固溶体Au(Ag)或Ag(Au)、Au4Zr、Au3Zr和Au2Zr;4个二相区:Au4Zr+Au(Ag)、Au3Zr+Au(Ag)、Au4Zr+Au3Zr和Au3Zr+Au2Zr;2个三相区:Au4Zr+Au3Zr+Au(Ag)和Au3Zr+Au2Zr+Au(Ag);在该区域没有形成新的三元化合物。

On the basis of Au-Ag, Au-Zr and Ag-Zr binary phase diagrams, the 700℃ isothermal section of the gold-rich field in Au-Ag-Zr ternary system was established by X-ray diffraction analysis, electron probe microanalyses （EPMA） and optical microscopy. It was found that there is the long single-phase region, Au（Ag） or Ag（Au）, along the Au-Ag binary isomorphous system on the gold-silver-rich side of the 700℃ isothermal section. It was confirmed that the partial 700℃ isothermal section consists of four single-phase regions： solid solution Au（Ag） or Ag（Au）, Au4Zr, AuaZr and Au2Zr; four binary-phase regions： Au4Zr ＋ Au（Ag）, AuaZr ＋ Au（Ag）, Au4Zr ＋AuaZr and AuaZr ＋ Au2Zr, and two ternary regions： Au4Zr ＋AuaZr ＋ Au（Ag） and AuaZr ＋ Au2Zr ＋ Au（Ag）. No new ternary compound was formed in the gold-rich field.