Research output: Contribution to journal › Article
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.
In: Journal of Alloys and Compounds, Vol. 614, 2014, p. 364-367.Research output: Contribution to journal › Article
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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
ER -
ID: 7005274