Hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5)

M. H. Mintz; Z. Hadari; M. P. Dariel

doi:10.1016/0022-5088(79)90242-X

Hydrogenation characteristics of Ti₂NiO_x compounds (0 ≤ x < 0.5)

M. H. Mintz, Z. Hadari, M. P. Dariel

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Abstract

The hydrogenation characteristics of Ti₂NiO_x compounds (0 ≤ x < 0.5) were investigated using combined TG-DTA techniques. The presence of oxygen in Ti₂Ni affects the hydrogen uptake capacity, the stability of the hydrides and the phase transition behavior of the corresponding hydrogen-containing compounds. Oxygen atoms occupy some of the available hydrogen interstitial sites and also influence the electron concentration, and possibly they reduce the enthalpy of formation of the hydrides. The cooling rate affects the maximum hydrogen uptake at room temperature, with rapid cooling giving the highest hydrogen content. These rate effects are tentatively explained on the basis of a model involving two types of hydrogen-occupied interstitial sites.

Original language	English
Pages (from-to)	181-191
Number of pages	11
Journal	Journal of the Less-Common Metals
Volume	63
Issue number	2
DOIs	https://doi.org/10.1016/0022-5088(79)90242-X
State	Published - 1 Jan 1979

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General Engineering

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abstract = "The hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5) were investigated using combined TG-DTA techniques. The presence of oxygen in Ti2Ni affects the hydrogen uptake capacity, the stability of the hydrides and the phase transition behavior of the corresponding hydrogen-containing compounds. Oxygen atoms occupy some of the available hydrogen interstitial sites and also influence the electron concentration, and possibly they reduce the enthalpy of formation of the hydrides. The cooling rate affects the maximum hydrogen uptake at room temperature, with rapid cooling giving the highest hydrogen content. These rate effects are tentatively explained on the basis of a model involving two types of hydrogen-occupied interstitial sites.",

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AU - Mintz, M. H.

AU - Hadari, Z.

AU - Dariel, M. P.

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N2 - The hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5) were investigated using combined TG-DTA techniques. The presence of oxygen in Ti2Ni affects the hydrogen uptake capacity, the stability of the hydrides and the phase transition behavior of the corresponding hydrogen-containing compounds. Oxygen atoms occupy some of the available hydrogen interstitial sites and also influence the electron concentration, and possibly they reduce the enthalpy of formation of the hydrides. The cooling rate affects the maximum hydrogen uptake at room temperature, with rapid cooling giving the highest hydrogen content. These rate effects are tentatively explained on the basis of a model involving two types of hydrogen-occupied interstitial sites.

AB - The hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5) were investigated using combined TG-DTA techniques. The presence of oxygen in Ti2Ni affects the hydrogen uptake capacity, the stability of the hydrides and the phase transition behavior of the corresponding hydrogen-containing compounds. Oxygen atoms occupy some of the available hydrogen interstitial sites and also influence the electron concentration, and possibly they reduce the enthalpy of formation of the hydrides. The cooling rate affects the maximum hydrogen uptake at room temperature, with rapid cooling giving the highest hydrogen content. These rate effects are tentatively explained on the basis of a model involving two types of hydrogen-occupied interstitial sites.

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JO - Journal of the Less-Common Metals

JF - Journal of the Less-Common Metals

IS - 2

ER -

Hydrogenation characteristics of Ti₂NiO_x compounds (0 ≤ x < 0.5)

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