文献类型：期刊文献

英文题名：Study on the thermodynamics of the gadolinium-hydrogen binary system (H/Gd=0.0-2.0) and implications to metallic gadolinium purification

作者：Fu, Kai[1,2];Li, Guoling[1,2];Li, Jigang[1];Liu, Yang[3];Tian, Wenhuai[2];Zheng, Jie[1];Li, Xingguo[1]

第一作者：Fu, Kai

通讯作者：Li, XG[1];Tian, WH[2]

机构：[1]Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China;[2]Univ Sci & Technol Beijing, Dept Mat Phys & Chem, 30 Xueyuan Rd, Beijing 100083, Peoples R China;[3]Beijing Union Univ, Coll Arts & Sci, Dept Food Sci, Beijing 100101, Peoples R China

第一机构：Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

通讯机构：[1]corresponding author), Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China;[2]corresponding author), Univ Sci & Technol Beijing, Dept Mat Phys & Chem, 30 Xueyuan Rd, Beijing 100083, Peoples R China.

年份：2016

卷号：673

起止页码：131-137

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20181304944401);Scopus(收录号：2-s2.0-85043800139);WOS:【SCI-EXPANDED(收录号:WOS:000373466400018)】；

基金：The authors acknowledge MOST of China (No. 2012CBA01207) and National Natural Science Foundation of China (NSFC) (No. U1201241, 11375020, 51431001 and 21321001).

语种：英文

外文关键词：Rare earth hydrides; Pressure-composition isotherm; Phase diagram; Thermodynamics

摘要：The thermodynamics of the gadolinium-hydrogen (Gd-H) binary system (H/Gd = 0.0-2.0) between 650 and 900 degrees C is studied by pressure composition isotherm measurement. Significant H dissolution in Gd is observed, up to H/Gd = 0.34 at 650 degrees C and 0.55 at 900 degrees C. The metal-rich phase boundary of non-stoichiometric gadolinium dihydride was found to occur with nominal composition of GdH1.80 at 650 degrees C and GdH1.53 at 900 degrees C. The results are in fairly good agreement with previous experimental work but with improved accuracy. The binary phase diagram is obtained using the CALPHAD method. The thermodynamic study here assists the understanding on the efficient deoxygenation effect by the H in Gd for Gd purification. (C) 2016 Elsevier B.V. All rights reserved.