MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Hydrogen Absorption and Desorption Properties of Ti3Al-Ni Alloys
S. ManoK. HashiK. IshikawaK. Aoki
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2002 Volume 43 Issue 3 Pages 421-423

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Abstract

Structures of as-cast and homogenized Ti75−xAl25Nix alloys before and after hydrogenation, the hydrogen content and the hydrogen desorption temperature of the hydrogenated Ti75−xAl25Nix alloys were investigated by a powder X-ray diffractometer (XRD) and a hydrogen analyzer. The hydrogen content of these alloys decreased with increasing Ni content, and was almost independent of the hydrogenation temperature and the structure of the alloys, but 50% hydrogen desorption temperature, Td, varied widely with them. The formation of amorphous phases raised Td. On the contrary, a drop in Td was achieved by hydrogenation of a mixture alloy of the D019 and C14 Laves phases.

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© 2002 The Japan Institute of Metals and Materials
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