Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi

被引：45

作者：

Ikeda, K

Orimo, S

Zuttel, A

Schlapbach, L

Fujii, H

机构：

[1] Hiroshima Univ, Fac Integrated Arts & Sci, Higashihiroshima 7398521, Japan

[2] Univ Fribourg, Inst Phys, CH-1700 Fribourg, Switzerland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 280卷 / 1-2期

关键词：

amorphous alloys; substitution; enthalpy of formation; magnesium-nickel alloys; mechanical alloying;

D O I：

10.1016/S0925-8388(98)00710-5

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：

Amorphous (a-)Mg(Ni1-xTx) with T=Co and Cu were formed by mechanical alloying in the composition range x=0-0.5. The crystallization temperatures increase/decrease by Co/Cu substitution, while the enthalpies of amorphous formation are little changed by substitution. On the other hand, the p-e isotherms indicate that the hydrogen-site energies become partially unstable with substitution. The relation between the enthalpy of amorphous alloy formation and subsequent hydride formation is discussed quantitatively on the basis of thermal analysis and the rule of reversed stability. (C) 1998 Elsevier Science S.A. All rights reserved.

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页码：279 / 283

页数：5

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