期刊
SCRIPTA MATERIALIA
卷 138, 期 -, 页码 22-27出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.05.022
关键词
High-entropy alloys; X-ray diffraction; Platinum group alloys; Electrochemistry
类别
资金
- Welsh Government
- Higher Education Funding Council for Wales through the Ser Cymru National Research Network in Advanced Engineering and Materials
- Higher Education Funding Council for Wales through the Materials Advanced Characterisation Centre
High-entropy alloys containing 5 and 6 platinum group metals have been prepared by thermal decomposition of single-source precursors non requiring high temperature or mechanical alloying. The prepared Ir0.90Os0.22Re0.21Rh0.20Ru0.19 alloy is the first example of a single-phase hexagonal high-entropy alloy. Heat treatment up to 1500 K and compression up to 45 GPa do not result in phase changes, a record temperature and pressure stability for a single-phase high-entropy alloy. The alloys show pronounced electrocatalytic activity in methanol oxidation, which opens a route for the use of high-entropy alloys as materials for sustainable energy conversion. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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