期刊
VACUUM
卷 168, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2019.108850
关键词
High-entropy alloys (HEAs); Reactive sputtering; Multi-element oxides
资金
- USTEM at TU Wien
- Plansee Composite Materials GmbH
Single-phase crystalline (Al,Cr,Nb,Ta,Ti)O-2 high-entropy oxide thin films were synthesized at 400 degrees C by reactive magnetron sputtering of an equimolar Al-Cr-Nb-Ta-Ti-compound target. These show similar chemistry as well as the same rutile structure, even when varying the relative oxygen flow-rate ratio (f(o2)) during deposition over a wide range. Upon increasing f(o2) from 30 to 80%, their hardness increases from 22 to 24 GPa and their indentation moduli increased from 380 to 410 GPa. The materials stayed single-phase crystalline with the rutile structure during vacuum annealing up to 1200 degrees C, only their orientation changed from random-like to highly 101-textured.
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