Advances in ultra-high temperature ceramics, composites, and coatings

• 出版年: Journal of Advanced Ceramics
• 主要な著者: Dewei Ni, Yuan Cheng, Jiaping Zhang, Ji-Xuan Liu, Ji Zou, Bowen Chen, Haoyang Wu, Hejun Li, Shaoming Dong, Jiecai Han, Xinghong Zhang, Qiangang Fu, Guo-Jun Zhang
• フォーマット: 論文
• 言語: 英語
• 出版事項: Tsinghua University Press 2021-12-01
• 主題: ultra-high temperature ceramics (UHTCs); coatings; composites; high-entropy ultra-high temperature ceramics
• オンライン･アクセス: https://doi.org/10.1007/s40145-021-0550-6
• ISSN: 2226-4108; 2227-8508

Abstract Ultra-high temperature ceramics (UHTCs) are generally referred to the carbides, nitrides, and borides of the transition metals, with the Group IVB compounds (Zr & Hf) and TaC as the main focus. The UHTCs are endowed with ultra-high melting points, excellent mechanical properties, and ablation resistance at elevated temperatures. These unique combinations of properties make them promising materials for extremely environmental structural applications in rocket and hypersonic vehicles, particularly nozzles, leading edges, and engine components, etc. In addition to bulk UHTCs, UHTC coatings and fiber reinforced UHTC composites are extensively developed and applied to avoid the intrinsic brittleness and poor thermal shock resistance of bulk ceramics. Recently, highentropy UHTCs are developed rapidly and attract a lot of attention as an emerging direction for ultra-high temperature materials. This review presents the state of the art of processing approaches, microstructure design and properties of UHTCs from bulk materials to composites and coatings, as well as the future directions.