Abstract
The decomposition behavior of as-received and oxidized TiH{sub 2} powder has been studied using differential scanning calorimetry and X-ray diffraction. It was found that the decomposition of TiH{sub 2} in argon occurs in two stages, firstly the reduction in the stoichiometry of the hydride to {delta}-TiH{sub 1.5}, and secondly, with progressive heating, decomposition of the hydride to form the {beta}- and {alpha}-phases. When heating in air, at low temperatures, oxidation of the hydride to form an oxyhydride occurs and with progressive heating, the oxidation products Ti{sub 3}O and TiO{sub 2} are formed in increasing quantities. Heat treatment, to reduce the stoichiometry of the hydride and form an oxide layer, does delay the evolution of gas when re-heated in argon. A balance between the delay in gas evolution and detrimental gas loss is best achieved for pre-heat treating to between 530 and 630 deg. C.
Citation Formats
Kennedy, A R, and Lopez, V H.
The decomposition behavior of as-received and oxidized TiH{sub 2} foaming-agent powder.
Netherlands: N. p.,
2003.
Web.
doi:10.1016/S0921-5093(03)00211-9.
Kennedy, A R, & Lopez, V H.
The decomposition behavior of as-received and oxidized TiH{sub 2} foaming-agent powder.
Netherlands.
https://doi.org/10.1016/S0921-5093(03)00211-9
Kennedy, A R, and Lopez, V H.
2003.
"The decomposition behavior of as-received and oxidized TiH{sub 2} foaming-agent powder."
Netherlands.
https://doi.org/10.1016/S0921-5093(03)00211-9.
@misc{etde_20907820,
title = {The decomposition behavior of as-received and oxidized TiH{sub 2} foaming-agent powder}
author = {Kennedy, A R, and Lopez, V H}
abstractNote = {The decomposition behavior of as-received and oxidized TiH{sub 2} powder has been studied using differential scanning calorimetry and X-ray diffraction. It was found that the decomposition of TiH{sub 2} in argon occurs in two stages, firstly the reduction in the stoichiometry of the hydride to {delta}-TiH{sub 1.5}, and secondly, with progressive heating, decomposition of the hydride to form the {beta}- and {alpha}-phases. When heating in air, at low temperatures, oxidation of the hydride to form an oxyhydride occurs and with progressive heating, the oxidation products Ti{sub 3}O and TiO{sub 2} are formed in increasing quantities. Heat treatment, to reduce the stoichiometry of the hydride and form an oxide layer, does delay the evolution of gas when re-heated in argon. A balance between the delay in gas evolution and detrimental gas loss is best achieved for pre-heat treating to between 530 and 630 deg. C.}
doi = {10.1016/S0921-5093(03)00211-9}
journal = []
issue = {1-2}
volume = {357}
place = {Netherlands}
year = {2003}
month = {Sep}
}
title = {The decomposition behavior of as-received and oxidized TiH{sub 2} foaming-agent powder}
author = {Kennedy, A R, and Lopez, V H}
abstractNote = {The decomposition behavior of as-received and oxidized TiH{sub 2} powder has been studied using differential scanning calorimetry and X-ray diffraction. It was found that the decomposition of TiH{sub 2} in argon occurs in two stages, firstly the reduction in the stoichiometry of the hydride to {delta}-TiH{sub 1.5}, and secondly, with progressive heating, decomposition of the hydride to form the {beta}- and {alpha}-phases. When heating in air, at low temperatures, oxidation of the hydride to form an oxyhydride occurs and with progressive heating, the oxidation products Ti{sub 3}O and TiO{sub 2} are formed in increasing quantities. Heat treatment, to reduce the stoichiometry of the hydride and form an oxide layer, does delay the evolution of gas when re-heated in argon. A balance between the delay in gas evolution and detrimental gas loss is best achieved for pre-heat treating to between 530 and 630 deg. C.}
doi = {10.1016/S0921-5093(03)00211-9}
journal = []
issue = {1-2}
volume = {357}
place = {Netherlands}
year = {2003}
month = {Sep}
}