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On the thermal and mechanical properties of Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O across the high-entropy to entropy-stabilized transition
- Source :
- APL Materials. 10:121108
- Publication Year :
- 2022
- Publisher :
- AIP Publishing, 2022.
-
Abstract
- As various property studies continue to emerge on high entropy and entropy-stabilized ceramics, we seek a further understanding of the property changes across the phase boundary between “high-entropy” and “entropy-stabilized” phases. The thermal and mechanical properties of bulk ceramic entropy stabilized oxide composition Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O are investigated across this critical transition temperature via the transient plane-source method, temperature-dependent x-ray diffraction, and nano-indentation. The thermal conductivity remains constant within uncertainty across the multi-to-single phase transition at a value of ≈2.5 W/mK, while the linear coefficient of thermal expansion increases nearly 24% from 10.8 to 14.1 × 10−6 K−1. Mechanical softening is also observed across the transition.
- Subjects :
- General Engineering
General Materials Science
Subjects
Details
- ISSN :
- 2166532X
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- APL Materials
- Accession number :
- edsair.doi...........d5f2a752a81ef2ca90cce0addf81a380