Abstract
Titanium and its alloys are promising materials for hydrogen storage. However, hydrogen penetration accompanies the exploitation of hydrogen storage alloys. In particular, hydrogen penetration and accumulation in titanium alloys changes their mechanical properties. Therefore, the research works of such materials are mainly focused on improving the reversibility of hydrogen absorption-liberation processes, increasing the thermodynamic characteristics of the alloys, and augmenting their hydrogen storage capacity. In the process of hydrogenation-dehydrogenation, the formed defects both significantly reduce hydrogen storage capacity and can also be used to create effective traps for hydrogen. Therefore, the investigation of hydrogen interaction with structural defects in titanium and its alloys is very important. The present work, the hydrogen-induced formation of defects in the alloys of commercially pure titanium under temperature gas-phase hydrogenation (873 K) has studied by positron lifetime spectroscopy and Doppler broadening spectroscopy. Based on the evolution of positron annihilation parameters τf, τd, their corresponding intensities If, Id and relative changes of parameters S/S0 and W/W0, the peculiarities of hydrogen interaction with titanium lattice defects were investigated in a wide range of hydrogen concentrations from 0.8at% to 32.0at%.
| Original language | English |
|---|---|
| Pages (from-to) | 105-111 |
| Number of pages | 7 |
| Journal | Progress in Natural Science: Materials International |
| Volume | 27 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Feb 2017 |
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Keywords
- Doppler broadening
- Hydrogen
- Lattice defects
- Positron annihilation
- Positron lifetime
- Titanium
ASJC Scopus subject areas
- General
Cite this
Gas-phase hydrogenation influence on defect behavior in titanium-based hydrogen-storage material. / Laptev, Roman S.; Kudiiarov, Viktor N.; Bordulev, Yuri S.; Mikhaylov, Andrey A.; Lider, Andrey M.
In: Progress in Natural Science: Materials International, Vol. 27, No. 1, 01.02.2017, p. 105-111.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Gas-phase hydrogenation influence on defect behavior in titanium-based hydrogen-storage material
AU - Laptev, Roman S.
AU - Kudiiarov, Viktor N.
AU - Bordulev, Yuri S.
AU - Mikhaylov, Andrey A.
AU - Lider, Andrey M.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Titanium and its alloys are promising materials for hydrogen storage. However, hydrogen penetration accompanies the exploitation of hydrogen storage alloys. In particular, hydrogen penetration and accumulation in titanium alloys changes their mechanical properties. Therefore, the research works of such materials are mainly focused on improving the reversibility of hydrogen absorption-liberation processes, increasing the thermodynamic characteristics of the alloys, and augmenting their hydrogen storage capacity. In the process of hydrogenation-dehydrogenation, the formed defects both significantly reduce hydrogen storage capacity and can also be used to create effective traps for hydrogen. Therefore, the investigation of hydrogen interaction with structural defects in titanium and its alloys is very important. The present work, the hydrogen-induced formation of defects in the alloys of commercially pure titanium under temperature gas-phase hydrogenation (873 K) has studied by positron lifetime spectroscopy and Doppler broadening spectroscopy. Based on the evolution of positron annihilation parameters τf, τd, their corresponding intensities If, Id and relative changes of parameters S/S0 and W/W0, the peculiarities of hydrogen interaction with titanium lattice defects were investigated in a wide range of hydrogen concentrations from 0.8at% to 32.0at%.
AB - Titanium and its alloys are promising materials for hydrogen storage. However, hydrogen penetration accompanies the exploitation of hydrogen storage alloys. In particular, hydrogen penetration and accumulation in titanium alloys changes their mechanical properties. Therefore, the research works of such materials are mainly focused on improving the reversibility of hydrogen absorption-liberation processes, increasing the thermodynamic characteristics of the alloys, and augmenting their hydrogen storage capacity. In the process of hydrogenation-dehydrogenation, the formed defects both significantly reduce hydrogen storage capacity and can also be used to create effective traps for hydrogen. Therefore, the investigation of hydrogen interaction with structural defects in titanium and its alloys is very important. The present work, the hydrogen-induced formation of defects in the alloys of commercially pure titanium under temperature gas-phase hydrogenation (873 K) has studied by positron lifetime spectroscopy and Doppler broadening spectroscopy. Based on the evolution of positron annihilation parameters τf, τd, their corresponding intensities If, Id and relative changes of parameters S/S0 and W/W0, the peculiarities of hydrogen interaction with titanium lattice defects were investigated in a wide range of hydrogen concentrations from 0.8at% to 32.0at%.
KW - Doppler broadening
KW - Hydrogen
KW - Lattice defects
KW - Positron annihilation
KW - Positron lifetime
KW - Titanium
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UR - http://www.scopus.com/inward/citedby.url?scp=85010987112&partnerID=8YFLogxK
U2 - 10.1016/j.pnsc.2017.01.001
DO - 10.1016/j.pnsc.2017.01.001
M3 - Article
VL - 27
SP - 105
EP - 111
JO - Progress in Natural Science: Materials International
JF - Progress in Natural Science: Materials International
SN - 1002-0071
IS - 1
ER -