Influence of impurities on the milling process of MgH2

被引：36

作者：

Ares, J. R. ^{[1
]}

Aguey-Zinsou, K.-F. ^{[1
]}

Klassen, T. ^{[1
]}

Bormann, R. ^{[1
]}

机构：

[1] GKSS Forschungszentrum Geesthacht GmbH, Inst Mat Res, D-21502 Geesthacht, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷 / 729-733期

关键词：

hydrogen absorbing materials; mechanical alloying; kinetics;

D O I：

10.1016/j.jallcom.2006.08.132

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：

Mechanical milling (MM) is an useful technique to improve the H-kinetics of magnesium hydride (MgH2) by crystallite and particle size reduction. In the present work, we report the significant influence of impurities coming from the milling tools on magnesium H-sorption properties. We have observed that a high impurity level leads to powder agglomeration and subsequently, it prevents an efficient reduction of MgH2 particle size. Therefore, a drawback in H-sorption properties is observed. Finally, a short outlook about the influence of impurities on desorption temperature of MgH2 milled with different additives (metal-oxides) will be presented. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：729 / 733

页数：5

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