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Title: On the thermal and mechanical properties of Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 O across the high-entropy to entropy-stabilized transition
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 Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 O 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.  more » « less
Award ID(s):
2011839
NSF-PAR ID:
10415233
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ;
Date Published:
Journal Name:
APL Materials
Volume:
10
Issue:
12
ISSN:
2166-532X
Page Range / eLocation ID:
121108
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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