Standard enthalpies of formation of some lanthanide gallides by high temperature direct synthesis calorimetry

被引：11

作者：

Meschel, SV ^{[1
]}

Kleppa, OJ ^{[1
]}

机构：

[1] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 319卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

enthalpy; lanthanide gallides; calorimetry;

D O I：

10.1016/S0925-8388(01)00913-6

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 standard enthalpies of formation of some lanthanide metal gallides have been measured by high temperature direct synthesis calorimetry at 1373 +/-2 K. The following results (in kJ/mole of atoms) are reported; CeGa2(-71.1 +/-2.6); PrGa2(-69.3 +/-2.7); NdGa2(-72.1 +/-1.8); SmGa,(-73.7 +/-2.3); GdGa2(-72.8 +/-2.8); TbGa2(-72.3 +/-2.4); DyGa3(-52.5 +/-2.0); HoGa3(-56.8 +/-2.1); ErGa3(-51.6 +/-1.8); TmGa3(-53.9 +/-2.5); LuGa3(-52.2 +/-2.3). The results are compared with some earlier Values derived from EMF measurements. They are also compared with the predicted values of Miedema et al. [Calphad 7 (1983) 51]. We will also compare our measured enthalpies of formation with the predictions by Gschneidner [J. Less Common Metals 17 (1969) 1; Metals Mater. Processes 1 (1990) 241] for lanthanide alloys. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：204 / 209

页数：6

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