Hydrogen permeation in rapidly quenched amorphous and crystallized Nb 20Ti40Ni40 alloy ribbons

Kazuhiro Ishikawa, Yuta Seki, Koichi Kita, Mitsuhiro Matsuda, Minoru Nishida, Kiyoshi Aoki

研究成果: ジャーナルへの寄稿記事

27 引用 (Scopus)

抄録

Formation of an amorphous (a-) Nb20Ti40Ni 40 alloy by rapid quenching and its crystallization behavior were investigated by X-ray diffraction, differential scanning calorimetry and scanning electron microscopy. The B2-TiNi phase was firstly crystallized and the remaining amorphous (a-) phase subsequently decomposed into the bcc-(Nb, Ti) + B2-TiNi phases. The crystallized (c-) Nb20Ti40Ni 40 samples obtained by annealing above 1173 K were ductile and insusceptible to hydrogen embrittlement between 598 and 673 K. Hydrogen permeability at 673 K (Φ673K) for the a- and c-Nb20Ti 40Ni40 alloys were 8.1 × 10-9 and (3.0-4.8) × 10-9 mol H2/m/s/Pa0.5, respectively. Φ673K increased with the increase in the diameter of the bcc-(Nb, Ti) phase, although this led to poor resistance to hydrogen embrittlement. The lower hydrogen permeability of the c-Nb20Ti 40Ni40 alloy was due to its lower hydrogen diffusivity. The present work demonstrated that rapid quenching and subsequent annealing are useful to prepare thermally stable Nb-TiNi hydrogen permeation alloy membranes.

元の言語英語
ページ(範囲)1784-1792
ページ数9
ジャーナルInternational Journal of Hydrogen Energy
36
発行部数2
DOI
出版物ステータス出版済み - 1 1 2011

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Permeation
ribbons
hydrogen embrittlement
Rapid quenching
Hydrogen
Hydrogen embrittlement
hydrogen
permeability
Annealing
annealing
diffusivity
Differential scanning calorimetry
heat measurement
Crystallization
crystallization
membranes
Membranes
X ray diffraction
Scanning electron microscopy
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

これを引用

Hydrogen permeation in rapidly quenched amorphous and crystallized Nb 20Ti40Ni40 alloy ribbons. / Ishikawa, Kazuhiro; Seki, Yuta; Kita, Koichi; Matsuda, Mitsuhiro; Nishida, Minoru; Aoki, Kiyoshi.

:: International Journal of Hydrogen Energy, 巻 36, 番号 2, 01.01.2011, p. 1784-1792.

研究成果: ジャーナルへの寄稿記事

Ishikawa, Kazuhiro ; Seki, Yuta ; Kita, Koichi ; Matsuda, Mitsuhiro ; Nishida, Minoru ; Aoki, Kiyoshi. / Hydrogen permeation in rapidly quenched amorphous and crystallized Nb 20Ti40Ni40 alloy ribbons. :: International Journal of Hydrogen Energy. 2011 ; 巻 36, 番号 2. pp. 1784-1792.
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