Abstract
This contribution reveals ultra-high corrosion resistance of high entropy alloys (HEAs), i.e. Ti20Zr20Nb15V15Hf15Ta15 of 1.85 µm yr–1 in alkaline environment, adverting their use for battery/fuel cell components. Formation of several nanometers passive oxide layer confirmed by scanning transmission electron microscopy accounts for corrosion resistance which increases with TiOx content. Cathodic Tafel slope of 67 mV dec–1 and large transfer coefficient of 0.82 obtained for Ti20Zr20Nb20V20Ta20 suggest its use for hydrogen electrocatalysis. High amounts of hydrogen storage, 1.7 wt% in Ti25Zr25Nb15V15Ta20, were confirmed by gas-solid reactions. This HEA also has high corrosion resistance in acidic and saline environments ideal for coatings and surgical tools/implants.
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 109880 |
| Seitenumfang | 10 |
| Fachzeitschrift | Corrosion science |
| Jahrgang | 193.2021 |
| Ausgabenummer | December |
| Frühes Online-Datum | 12 Okt. 2021 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - Dez. 2021 |
Bibliographische Notiz
Funding Information:This work was supported by The Austrian Science Fund (FWF) under project Grant I3937-N36 , “ ExtendGlass – Extending the range of the glassy state: Exploring structure and property limits in metallic glasses ” (Grant ERC-2015-ADG-695487 ), the state task of the Ministry of Science and Higher Education of the Russian Federation No. 0657-2020-0005 , and Ministry of Science and Higher Education of the Russian Federation in the framework of the Increase Competitiveness Program of NUST " MISiS " (Grant number K2-2020-046 ). We thank DESY (Hamburg, Germany), a member of the Helmholtz Association (HGF), for providing experimental facilities and the for the support of the Beamline Scientist Dr. Jochi Tseng. Parts of this research, including synchrotron X-ray diffraction, were performed at PETRA III using the Powder Diffraction and Total Scattering beamline P02.1 in the framework of project CALIPSOplus under the Grant Agreement 730872 of the EU Framework Programme for Research and Innovation HORIZON 2020.
Funding Information:
This work was supported by The Austrian Science Fund (FWF) under project Grant I3937-N36, ?ExtendGlass ? Extending the range of the glassy state: Exploring structure and property limits in metallic glasses? (Grant ERC-2015-ADG-695487), the state task of the Ministry of Science and Higher Education of the Russian Federation No. 0657-2020-0005, and Ministry of Science and Higher Education of the Russian Federation in the framework of the Increase Competitiveness Program of NUST ?MISiS? (Grant number K2-2020-046). We thank DESY (Hamburg, Germany), a member of the Helmholtz Association (HGF), for providing experimental facilities and the for the support of the Beamline Scientist Dr. Jochi Tseng. Parts of this research, including synchrotron X-ray diffraction, were performed at PETRA III using the Powder Diffraction and Total Scattering beamline P02.1 in the framework of project CALIPSOplus under the Grant Agreement 730872 of the EU Framework Programme for Research and Innovation HORIZON 2020.
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