Thermodynamic measurement of La-Fe and Y-Fe alloys by multi-Knudsen cell mass spectrometry

被引：12
作者：
Nagai, Takashi [1 ]
Han, Woong-hee [1 ]
Maeda, Masafumi [1 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 507卷 / 01期
关键词：
Thermodynamic properties; Activity; Iron-rare earth alloy; Knudsen cell mass spectrometry; VAPOR-PRESSURE;
D O I：
10.1016/j.jallcom.2010.07.147
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The activities of La and Fe in the La-Fe alloys, and those of Y and Fe in the Y-Fe alloys were determined by multi-Knudsen cell mass spectrometry. The activities of La and Fe in La-Fe alloys with La from 39.3 to 94.3 at% were determined at 1473-1623 K, measuring the ion currents of the vapor of La and Fe in equilibrium with La-Fe melts, and liquid + gamma Fe. The activities of Y and Fe in Y-Fe alloys with Y from 15.1 to 87.8 at% were calculated at 1473-1573K by measuring the ion currents of vapor in equilibrium with Fe(17)Y(2+) Fe(23)Y(6), Fe(23)Y(6) + Fe(3)Y, Fe(3)Y+ liquid, Y-Fe melts, and liquid + alpha Y. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 76
页数：5
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