MISC

2004年7月

Phase relations of Zr(FexMn1-x)(2)-H-2 systems studied by XRD and isothermal-calorimetric measurement

JOURNAL OF ALLOYS AND COMPOUNDS
  • GP Li
  • ,
  • N Nishimiya

375
1-2
開始ページ
205
終了ページ
211
記述言語
英語
掲載種別
DOI
10.1016/j.jallcom.2003.10.059
出版者・発行元
ELSEVIER SCIENCE SA

Zr(FexMn1-x)(2) alloys and their hydrides with x = 0, 0.2, 0.5, 0.7 and 0.8 were characterized by X-ray diffraction (XRD) under nitrogen and calorimetry under hydrogen where isotherms were measured at the same time. The hexagonal alloys (x = 0, 0.2 and 0.5) did not change crystal structure type on hydriding but significantly expanded. The alloys with x = 0.7 and 0.8, the XRD peaks from which were well indexed as cubic, did not expand on hydriding. Plots of differential heats on hydriding showed presence of phase transition through endothermic concaves all over the studied x values. Estimated transition heats monotonously decreased with the iron content, which might relate to decreasing volume expansion. Equilibrium pressures below 100 kPa at 298 K essentially increased with the iron content, but Zr(Fe0.2Mn0.8)(2) showed lower equilibrium pressures than ZrMn2 in a limited hydrogen concentration range. This was because the a transition of Zr(Fe0.2Mn0.8)(2) occurred at a higher hydrogen concentration, which varied the order of the pressures. (C) 2004 Elsevier B.V. All rights reserved.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.1016/j.jallcom.2003.10.059
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000222543800033&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.jallcom.2003.10.059
  • ISSN : 0925-8388
  • eISSN : 1873-4669
  • Web of Science ID : WOS:000222543800033

エクスポート
BibTeX RIS