Hydrogen-induced superabundant vacancies in electrodeposited Fe-C alloy films

被引：8
|
作者：
Fukumuro, Naoki [1 ]
Kojima, Saeka [1 ]
Fujino, Moeko [1 ]
Mizuta, Yasunori [1 ]
Maruo, Toshiaki [1 ]
Yae, Shinji [1 ]
Fukai, Yuh [2 ]
机构：
[1] Univ Hyogo, Grad Sch Engn, Dept Mat Sci & Chem, Himeji, Hyogo 6712201, Japan
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 645卷
关键词：
Electrodeposited Fe-C alloy; Thermal desorption spectroscopy; Hydrogen; Vacancy; Atomistic structure; ALPHA-IRON; METALS; CARBON;
D O I：
10.1016/j.jallcom.2014.12.093
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：
Fe-C alloy films containing supersaturated C and H were prepared by electrodeposition, and investigated for the hydrogen behavior in annealing processes utilizing X-ray diffraction and thermal desorption spectroscopy. The H content x(H) (x(H) = H/Fe) in the films increased from about 0.031 in pure Fe to about 0.36 in Fe-C alloy (x(C) = C/Fe = 0.073) in proportion to the C content. The lattice contraction of about 0.2% was observed in pure Fe films, whereas the lattice expansion increasing with C content was observed in Fe-C alloy films. Both the lattice contraction of the Fe films and the lattice expansion of the Fe-C alloy films were decreased as H was desorbed during heat treatments. The atomistic structure of vacancy-hydrogen and vacancy-carbon-hydrogen clusters in Fe-C alloy films is discussed, based on these experimental results. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：S404 / S407
页数：4
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