用X射线能谱研究金基六元合金

EDS Study on the Microstructure in Au-Ni-Fe-Cr-ID-Zr Alloy

利用Ｘ射线能谱（ＥＤＳ）和透射电子显微术（ＴＥＭ）等手段研究了Ａｕ－Ｎｉ－Ｆｅ－Ｃｒ－Ｉｎ－Ｚｒ合金的显微组织。研究结果表明，合金主要由Ａｕ基固溶体和Ｎｉ基固溶体组成。此外还有两种第二相粒子，一种粒子（命名为η相）含Ｃｒ量为９０ａｔ％，属简单正交结构，ａ＝０．４４８ｎｍ，ｂ＝１．４０ｎｍ，ｃ＝１．２１ｎｍ；另一种粒子为具有ｆｃｃ结构的化合物（Ｎｉ，Ａｕ）＿５Ｚｒ，ａ＝０．６８２ｎｍ。

The microstructure of Au-Mi-Fe-Cr-In-Zr alloy has been studied by means of EDS and TEM.The results show that the alloy contains Au-base solid solution,Ni-base solid solution and two kinds of secondary phase particles, one of the particles(designated as η phase)containing 90at%Cr possesses an orthorhombic structure with a=0.448nm.b=1.40nm and c=1.21nm. The other secondary phase is the compound(Ni,Au)_5 Zr with a fcc structure and a=0.682nm.