期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 41, 期 13, 页码 6130-6150出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2021.05.055
关键词
Ultrahigh temperature ceramics; Oxidation; SiC; Carbides; Borides
This review examines the need for materials capable of withstanding oxidation at ultrahigh temperatures, evaluating the performance of various ultra-high temperature ceramics in terms of oxidation resistance for specific applications.
Materials capable of oxidizing in a protective manner at ultrahigh (>1700 degrees C) temperatures are needed to push beyond this barrier defined by SiC. Although possessing attractive mechanical properties and oxidation resistance, SiC-based materials are ultimately temperature limited by the melting point of SiO2. The vast array of ultra-high and high temperature ceramic literature indicates the majority of these materials, like borides, carbides, MAX-phases, and high-entropy ceramics, fall woefully short regarding oxidation resistance. However, for specific applications, like low-orbit aeropropulsion, high ballistics coefficient atmospheric re-entry, and hypersonic cruise, there are a few promising materials. In the present review, oxidation criteria are gathered to build application specific heuristics and are then applied to a multitude of ultra-high temperature ceramics to gauge material efficacy. Discussion of oxidation kinetics, mechanisms and reaction products is offered for each material, identifying strengths, weaknesses, and the remaining gaps in our knowledge.
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