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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2211.14957 |
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| _version_ | 1866916282846150656 |
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| author | Rost, Christina M. Schmuckler, Daniel L. Bumgardner, Clifton Hoque, Md Shafkat Bin Diercks, David R. Gaskins, John T. Maria, Jon-Paul Brennecka, Geoffrey L. Li, Xiadong Hopkins, Patrick E. |
| author_facet | Rost, Christina M. Schmuckler, Daniel L. Bumgardner, Clifton Hoque, Md Shafkat Bin Diercks, David R. Gaskins, John T. Maria, Jon-Paul Brennecka, Geoffrey L. Li, Xiadong Hopkins, Patrick E. |
| contents | As various property studies continue to emerge on high entropy and entropy-stabilized ceramics, we seek further understanding of property changes across the phase boundary between \enquote{high-entropy} and \enquote{entropy-stabilized}. 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. 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 x 10$^{-6}$ K$^{-1}$. Mechanical softening is also observed across the transition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_14957 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | 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 Rost, Christina M. Schmuckler, Daniel L. Bumgardner, Clifton Hoque, Md Shafkat Bin Diercks, David R. Gaskins, John T. Maria, Jon-Paul Brennecka, Geoffrey L. Li, Xiadong Hopkins, Patrick E. Materials Science As various property studies continue to emerge on high entropy and entropy-stabilized ceramics, we seek further understanding of property changes across the phase boundary between \enquote{high-entropy} and \enquote{entropy-stabilized}. 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. 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 x 10$^{-6}$ K$^{-1}$. Mechanical softening is also observed across the transition. |
| 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 |
| topic | Materials Science |
| url | https://arxiv.org/abs/2211.14957 |