Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7898079 | Journal of the European Ceramic Society | 2018 | 4 Pages |
Abstract
In this paper, we report a new entropy-stabilized fluorite oxide, formed by solid-state reacting the equimolar mixture of CeO2, ZrO2, HfO2, TiO2 and SnO2 at 1500â¯Â°C. We demonstrated that the oxide is truly entropy-stabilized by showing that the oxide was transferred to a multiphase state when annealed at lower temperatures, and the transition between the low-temperature multiphase and high-temperature single-phase states is reversible. Room-temperature thermal conductivity of the fluorite oxide was measured to be 1.28â¯Wmâ1â¯Kâ1. The value is only half of that for 7â¯wt% yttria-stabilized zirconia, suggesting the material could be useful for thermal-insulation applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kepi Chen, Xintong Pei, Lei Tang, Haoran Cheng, Zemin Li, Cuiwei Li, Xiaowen Zhang, Linan An,