Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy
© 2018 American Chemical Society. A high-entropy alloy (HEA) of HfNbTiVZr was synthesized using an arc furnace followed by ball milling. The hydrogen absorption mechanism was studied by in situ X-ray diffraction at different temperatures and by in situ and ex situ neutron diffraction experiments. Th...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
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American Chemical Society
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/71372 |
| _version_ | 1848762462275371008 |
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| author | Karlsson, D. Ek, G. Cedervall, J. Zlotea, C. Moller, Kasper Hansen, T. Bednarcík, J. Paskevicius, M. Sørby, M. Jensen, T. Jansson, U. Sahlberg, M. |
| author_facet | Karlsson, D. Ek, G. Cedervall, J. Zlotea, C. Moller, Kasper Hansen, T. Bednarcík, J. Paskevicius, M. Sørby, M. Jensen, T. Jansson, U. Sahlberg, M. |
| author_sort | Karlsson, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 American Chemical Society. A high-entropy alloy (HEA) of HfNbTiVZr was synthesized using an arc furnace followed by ball milling. The hydrogen absorption mechanism was studied by in situ X-ray diffraction at different temperatures and by in situ and ex situ neutron diffraction experiments. The body centered cubic (BCC) metal phase undergoes a phase transformation to a body centered tetragonal (BCT) hydride phase with hydrogen occupying both tetrahedral and octahedral interstitial sites in the structure. Hydrogen cycling of the alloy at 500 °C is stable. The large lattice strain in the HEA seems favorable for absorption in both octahedral and tetrahedral sites. HEAs therefore have potential as hydrogen storage materials because of favorable absorption in all interstitial sites within the structure. |
| first_indexed | 2025-11-14T10:47:57Z |
| format | Journal Article |
| id | curtin-20.500.11937-71372 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:47:57Z |
| publishDate | 2018 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-713722018-12-13T09:33:40Z Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy Karlsson, D. Ek, G. Cedervall, J. Zlotea, C. Moller, Kasper Hansen, T. Bednarcík, J. Paskevicius, M. Sørby, M. Jensen, T. Jansson, U. Sahlberg, M. © 2018 American Chemical Society. A high-entropy alloy (HEA) of HfNbTiVZr was synthesized using an arc furnace followed by ball milling. The hydrogen absorption mechanism was studied by in situ X-ray diffraction at different temperatures and by in situ and ex situ neutron diffraction experiments. The body centered cubic (BCC) metal phase undergoes a phase transformation to a body centered tetragonal (BCT) hydride phase with hydrogen occupying both tetrahedral and octahedral interstitial sites in the structure. Hydrogen cycling of the alloy at 500 °C is stable. The large lattice strain in the HEA seems favorable for absorption in both octahedral and tetrahedral sites. HEAs therefore have potential as hydrogen storage materials because of favorable absorption in all interstitial sites within the structure. 2018 Journal Article http://hdl.handle.net/20.500.11937/71372 10.1021/acs.inorgchem.7b03004 American Chemical Society restricted |
| spellingShingle | Karlsson, D. Ek, G. Cedervall, J. Zlotea, C. Moller, Kasper Hansen, T. Bednarcík, J. Paskevicius, M. Sørby, M. Jensen, T. Jansson, U. Sahlberg, M. Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title | Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title_full | Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title_fullStr | Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title_full_unstemmed | Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title_short | Structure and Hydrogenation Properties of a HfNbTiVZr High-Entropy Alloy |
| title_sort | structure and hydrogenation properties of a hfnbtivzr high-entropy alloy |
| url | http://hdl.handle.net/20.500.11937/71372 |