Nd—Pd—Ru三元系富钯区域的相图

Phase Diagram of Palladium rich Region in Nd Pd Ru Ternary System

用Ｘ射线衍射和金相显微镜分析方法研究了Ｎｄ－Ｐｄ－Ｒｕ三元系的富钯区域，作出部分相图的７００℃等温截面。发现Ｒｕ在（ＮｄＰｄ３）中有高达１３ａｔ％的固溶度。该截面上存在４个单相区：（Ｐｄ），（Ｒｕ），ＮｄＰｄ５和ＮｄＰｄ３；５个二相区：（Ｐｄ）＋（Ｒｕ），（Ｐｄ）＋ＮｄＰｄ５，ＮｄＰｄ５＋ＮｄＰｄ３，ＮｄＰｄ３＋（Ｒｕ）和ＮｄＰｄ５＋（Ｒｕ）；２个三相区：（Ｒｕ）＋ＮｄＰｄ３＋ＮｄＰｄ５和（Ｐｄ）＋（Ｒｕ）＋ＮｄＰｄ５。

The 700℃ isothermal section of the palladium rich region of the Nd Pd Ru ternary phase diagram are constructed by X ray diffraction analysis and optical microscopy. It was found that the solid solubility of ruthenium in NdPd 3 is up to 13at% at 700℃. The section consists of four single phase regions: (Pd), (Ru), NdPd 5 and NdPd 3 ; five binary phase regions: (Pd)+(Ru), (Pd)+NdPd 5 , NdPd 5 +NdPd 3 , NdPd 3 +(Ru) and NdPd 5 +(Ru); two ternay phase regions: (Ru)+NdPd 3 +NdPd 5 and (Pd)+(Ru)+NdPd 5 .