Hydrogenation and phase structure of Ti-Fe-V alloys

被引：20

作者：

Miyamura, H ^{[1
]}

Sakai, T ^{[1
]}

Kuriyama, N ^{[1
]}

Tanaka, H ^{[1
]}

Uehara, I ^{[1
]}

Ishikawa, H ^{[1
]}

机构：

[1] OSAKA NATL RES INST,IKEDA,OSAKA 563,JAPAN

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 253卷 / 253-254期

关键词：

Ti-Fe-V alloy; laves phase; TiFe2; P-C isotherms;

D O I：

10.1016/S0925-8388(96)03028-9

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：

Hydrogenation behavior and phase structures of some Ti-Fe-V ternary alloys were studied. Three different crystal structures, namely, a bcc, a CsCl-type and a C14 Laves phase structure were found. The atoms in the C14 Laves phase TiFe2 could be partially substituted by vanadium atoms without changing its structure. It was found that the C14 Laves phase structure region was expanded nearly to the center of the Ti-Fe-V ternary phase diagram. Lattice parameters of the alloys increased almost in proportion with increasing average atomic size of the constituent elements. It was also found that hydrogen storage capacity at a constant pressure increased with increasing the degree of vanadium substitution. The pressure-composition (P-C) isotherms of the C14 Ti-Fe-V alloys strongly sloped and they had no flat plateau. The storage capacity of C14 Laves phase Ti-Fe-V alloy was optimized to be 1.0 at the chemical composition of TiFeV0.7.

引用

页码：232 / 234

页数：3

共 6 条

[1] PREPARATION AND PROPERTIES OF HYDROGEN STORAGE ALLOY COPPER MICROCAPSULES [J].