Ag-Pd-Ru三元系相图的700 ℃等温截面
来源期刊:中国有色金属学报2000年第1期
论文作者:张康侯 徐云 李曲波
文章页码:1 - 4
关键词:银;钯;钌;Ag-Pd-Ru三元系;相图
Key words:silver; palladium; ruthenium; Ag-Pd-Ru ternary systems; phase diagrams
摘 要:采用X射线衍射、电子探针和金相显微镜等方法研究了Ag-Pd-Ru三元系相图的700 ℃等温截面。发现在该截面上沿着Ag-Pd侧有一单相区(Ag或Pd),这个单相区在富Pd区域较宽;在该截面的富Ru侧也存在一较小的单相区(Ru);在这两个单相区之间是一个宽阔的二相区(Ag+Ru)。此外,在Ag-Pd-Ru三元系富Ag-Ru侧的部分成分区域,由于合金在液态出现分层现象,凝固后难于获得均匀合金,致使该区域内的相区边界未能测定。
Abstract: The 700 ℃ isothermal section of the Ag-Pd-Ru ternary system phase diagram was determined by X-ray diffraction analysis, electron probe analysis and optical microscopy. It was found that on this section there are a single-phase region (Ag or Pd) along Ag-Pd side, the wider part of which is at Pd-rich side, a small area single-phase region (Ru) at Ru-rich side and a wide two-phase region (Ag+Ru) between two single-phase regions. Because the liquid alloys in local Ag-Ru-rich range of the Ag-Pd-Ru ternary system exhibit immiscibility and are difficult to be homogenized after solidifying, the boundary of the two-phase region (Ag+Ru) is unable to be determined yet.