Solid state phase equilibria in the Te-rich region of the RE (RE = Ce, Nd and Pr)–Sn–Te ternary systems

详细信息    查看全文

• 作者：Guanghua Zhang ; Yongzhong Zhan ; Fusheng Luo ; Jianlie Liang ; Xianxiang Li ; Weiping Zhou ; Qiannan Gao
• 关键词：Phase diagrams ; Metals and alloys ; X-ray diffraction
• 刊名：Journal of Alloys and Compounds
• 出版年：2010
• 出版时间：18 February 2010
• 年：2010
• 卷：491
• 期：1-2
• 页码：182-186
• 全文大小：590 K

文摘

Phase relations in the Te-rich region (Te ≥ 50 at. % ) of the light RE (RE = Ce, Nd and Pr)–Sn–Te systems at room temperature have been investigated by means of X-ray powder diffraction (XRD) and differential thermal analysis (DTA). The results indicate that the binary intermetallic phases of RETe₃, RE₃Te₄, RETe and SnTe are found in the Te-rich region (Te ≥ 50 at. % ) of the RE (RE = Ce, Nd and Pr)–Sn–Te systems at room temperature. The binary compounds RE₄Te₇ and RE₂Te₅ have only been observed in the Nd–Sn–Te and Pr–Sn–Te systems. No ternary compound is observed. The maximum solid solubility of the light rare earth elements, i.e. Ce, Nd and Pr in SnTe are determined to be about 3 at. % , 3.5 at. % and 2.5 at. % , respectively.