Cold rolling under inert atmosphere: A powerful tool for Mg activation

被引：30

作者：

Floriano, R. ^{[1
]}

Leiva, D. R. ^{[1
]}

Carvalho, J. A. ^{[1
]}

Ishikawa, T. T. ^{[1
]}

Botta, W. J. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Paulo, Brazil

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

Nanocrystalline Mg; Cold rolling under inert atmosphere; Activation kinetics; HYDROGEN STORAGE PROPERTIES; SORPTION PROPERTIES; ALLOY; TRANSITION; MG/CU;

D O I：

10.1016/j.ijhydene.2014.01.070

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：

In the present work, we report results from a new processing route for Mg: cold rolling under inert atmosphere, followed by a short-time HEBM step (CR + HEBM). This processing route is presented as a powerful tool to reduce the activation time for Mg hydrogenation samples with no need to introduce any additives. Mg samples were extensively processed by CR and CR + HEBM and their effects on the microstructure and hydrogen storage properties were studied. The Mg samples processed by CR + HEBM presented refined microstructure (grain sizes around 4-7 nm), strong texture and are certainly free of oxide layer formation. These conditions lead to relatively fast activation kinetics and enhanced kinetics behavior that has not been reported in the literature so far. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：4959 / 4965

页数：7

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