Hydrogen absorption of C14 laves NiTiZr-NiVNb pseudo-binary alloys

Kazuhiro Ishikawa, Shintaro Noda, Kiyonori Suzuki, Kiyoshi Aoki

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Hydrogen absorption and desorption properties of C14 Laves NiTiZr-NiVNb and NiTiZr-NiVZr pseudo-binary alloys were investigated by using the Sieverts' apparatus, XRD and the hydrogen analyzer. The hydrogen capacity and the 50% hydrogen desorption temperature, T d, of the C14 Laves NiTiZr alloy is 1.5 (H/M) and 850 K, respectively. On the other hand, the hydrogen capacity of the C14 NiVNb alloy is 0.2 H/M. In the Ni(TiZr) 1-x(VNb) x pseudo-binary system, the hydrogen capacity of the alloys is decreased with increasing x, but the 50% hydrogen desorption temperature is almost constant. The substitution of VNb reduces the hydrogen absorption capacity of the C14 Laves NiTiZr alloy. The hydrogen desorption temperature of Ni(Ti 1-xV x)Zr alloy is reduced to 580 K without serious decrease of the hydrogen capacity with increasing x.

Original languageEnglish
Pages (from-to)95-100
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - 1 Dec 2003
EventMaterials and Technology for Hydrogen Economy - Boston, United States of America
Duration: 1 Dec 20033 Dec 2003

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