Journal
SCRIPTA MATERIALIA
Volume 129, Issue -, Pages 94-99Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.10.018
Keywords
Ceramics; Extreme environments; Borides; Carbides; Nitrides
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Funding
- Ultra-High Temperature Materials Program in the Office of Naval Research [N00014-16-1-2303]
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This paper identifies gaps in the present state of knowledge and describes emerging research directions for ultra-high temperature ceramics. Borides, carbides, and nitrides of early transition metals such as Zr, Hf, Nb, and Ta have the highest melting points of any known compounds, making them suitable for use in extreme environments. Studies of synthesis, processing, densification, thermal properties, mechanical behavior, and oxidation of ultra-high temperature ceramics have generated a substantial base of knowledge, but left unanswered questions. Emerging research directions include testing/characterization in extreme environments, composites, computational studies, and new materials. (C) 2016 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
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