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Metals 2015, 5(4), 2021-2033; doi:10.3390/met5042021

Effect of Cold Rolling on the Hydrogen Desorption Behavior of Binary Metal Hydride Powders under Microwave Irradiation

1
Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-580, Brazil
2
Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières (UQTR), 3351 des Forges, Trois-Rivières, QC G9A 5H7, Canada
*
Authors to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 25 August 2015 / Revised: 11 October 2015 / Accepted: 22 October 2015 / Published: 28 October 2015
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Abstract

In this paper we report that cold rolling could drastically improve hydrogen desorption kinetics under microwave irradiation. Samples of metal hydride powders (TiH2, ZrH2, and MgH2) in as-received conditions and after cold rolling were microwave irradiated in a vacuum using a simple experimental setup. After irradiation, the samples were characterized by X-ray diffraction in other to evaluate the effectiveness of microwave heating. The diffraction patterns indicated that only MgH2 could be fully decomposed (dehydrided) in the as received state. TiH2 was only partially decomposed while no decomposition was observed for ZrH2. However, cold rolling the hydride powders prior to microwave heating led to a significant improvement of hydride decomposition, resulting in the complete dehydriding of TiH2 and extensive dehydriding of ZrH2. These results clearly indicated the positive effects of cold rolling on the microwave assisted desorption of the investigated binary hydrides. View Full-Text
Keywords: metal hydrides; microwave heating; hydrogen desorption; cold rolling; magnesium hydride; titanium hydride; zirconium hydride metal hydrides; microwave heating; hydrogen desorption; cold rolling; magnesium hydride; titanium hydride; zirconium hydride
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

da Silva Dupim, I.; Ferreira Santos, S.; Huot, J. Effect of Cold Rolling on the Hydrogen Desorption Behavior of Binary Metal Hydride Powders under Microwave Irradiation. Metals 2015, 5, 2021-2033.

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