H-1 NMR study of hydrogen self-diffusion in ternary Ti-V-Cr alloys

A.V. Vyvodtceva, M.G. Shelyapina, A.F. Privalov, Y.S. Chernyshev, D. Fruchart

Результат исследований: Научные публикации в периодических изданияхстатья

9 Цитирования (Scopus)

Выдержка

Here we report on the results of proton NMR study of hydrogen self-diffusion in hydrides of Ti-V-Cr alloys of different composition, pure and with 4 wt.% of Zr7Ni10 additives, namely, TiV0.8Cr1.2H5.29, Ti0.5V1.9Cr0.6H5.03 and Ti0.33V1.27Cr1.4H1.13. The measurements have been made using the static field gradient nuclear magnetic resonance technique. The hydrogen self-diffusion coefficient at room temperature lies within the range of 1.4 ÷ 3.7 ×10–11 m2/s. The activation energy Ea strongly depends on the both composition and structure type of the hydride. The samples with bcc structure (and with the lowest hydrogen concentration) exhibit the highest Ea value of 0.2 eV. For the samples with fcc structure the Ea value is lower and decreases with increasing the vanadium fraction. The influence of Zr7Ni10 additives on the measured parameters is also discussed.
Язык оригиналаанглийский
Страницы (с-по)364-367
Число страниц4
ЖурналJournal of Alloys and Compounds
Том614
DOI
СостояниеОпубликовано - 2014

Отпечаток

Hydrogen
Nuclear magnetic resonance
Hydrides
Vanadium
Chemical analysis
Protons
Activation energy
Temperature

Цитировать

Vyvodtceva, A.V. ; Shelyapina, M.G. ; Privalov, A.F. ; Chernyshev, Y.S. ; Fruchart, D. / H-1 NMR study of hydrogen self-diffusion in ternary Ti-V-Cr alloys. В: Journal of Alloys and Compounds. 2014 ; Том 614. стр. 364-367.
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abstract = "Here we report on the results of proton NMR study of hydrogen self-diffusion in hydrides of Ti-V-Cr alloys of different composition, pure and with 4 wt.{\%} of Zr7Ni10 additives, namely, TiV0.8Cr1.2H5.29, Ti0.5V1.9Cr0.6H5.03 and Ti0.33V1.27Cr1.4H1.13. The measurements have been made using the static field gradient nuclear magnetic resonance technique. The hydrogen self-diffusion coefficient at room temperature lies within the range of 1.4 ÷ 3.7 ×10–11 m2/s. The activation energy Ea strongly depends on the both composition and structure type of the hydride. The samples with bcc structure (and with the lowest hydrogen concentration) exhibit the highest Ea value of 0.2 eV. For the samples with fcc structure the Ea value is lower and decreases with increasing the vanadium fraction. The influence of Zr7Ni10 additives on the measured parameters is also discussed.",
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author = "A.V. Vyvodtceva and M.G. Shelyapina and A.F. Privalov and Y.S. Chernyshev and D. Fruchart",
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H-1 NMR study of hydrogen self-diffusion in ternary Ti-V-Cr alloys. / Vyvodtceva, A.V.; Shelyapina, M.G.; Privalov, A.F.; Chernyshev, Y.S.; Fruchart, D.

В: Journal of Alloys and Compounds, Том 614, 2014, стр. 364-367.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - H-1 NMR study of hydrogen self-diffusion in ternary Ti-V-Cr alloys

AU - Vyvodtceva, A.V.

AU - Shelyapina, M.G.

AU - Privalov, A.F.

AU - Chernyshev, Y.S.

AU - Fruchart, D.

PY - 2014

Y1 - 2014

N2 - Here we report on the results of proton NMR study of hydrogen self-diffusion in hydrides of Ti-V-Cr alloys of different composition, pure and with 4 wt.% of Zr7Ni10 additives, namely, TiV0.8Cr1.2H5.29, Ti0.5V1.9Cr0.6H5.03 and Ti0.33V1.27Cr1.4H1.13. The measurements have been made using the static field gradient nuclear magnetic resonance technique. The hydrogen self-diffusion coefficient at room temperature lies within the range of 1.4 ÷ 3.7 ×10–11 m2/s. The activation energy Ea strongly depends on the both composition and structure type of the hydride. The samples with bcc structure (and with the lowest hydrogen concentration) exhibit the highest Ea value of 0.2 eV. For the samples with fcc structure the Ea value is lower and decreases with increasing the vanadium fraction. The influence of Zr7Ni10 additives on the measured parameters is also discussed.

AB - Here we report on the results of proton NMR study of hydrogen self-diffusion in hydrides of Ti-V-Cr alloys of different composition, pure and with 4 wt.% of Zr7Ni10 additives, namely, TiV0.8Cr1.2H5.29, Ti0.5V1.9Cr0.6H5.03 and Ti0.33V1.27Cr1.4H1.13. The measurements have been made using the static field gradient nuclear magnetic resonance technique. The hydrogen self-diffusion coefficient at room temperature lies within the range of 1.4 ÷ 3.7 ×10–11 m2/s. The activation energy Ea strongly depends on the both composition and structure type of the hydride. The samples with bcc structure (and with the lowest hydrogen concentration) exhibit the highest Ea value of 0.2 eV. For the samples with fcc structure the Ea value is lower and decreases with increasing the vanadium fraction. The influence of Zr7Ni10 additives on the measured parameters is also discussed.

KW - Metal hydrides

KW - Diffusion

KW - Nuclear resonances

U2 - 10.1016/j.jallcom.2014.06.023

DO - 10.1016/j.jallcom.2014.06.023

M3 - Article

VL - 614

SP - 364

EP - 367

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

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