Fabrication of ebc system with oxide eutectic structure

Shunkichi Ueno, Kyosuke Seya, Byungkoog Jang

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

In this paper, the fabrication method and the formation mechanism of a new EBC system with Al2O3-HfO2 eutectic structure are discussed. A rapid heating process is required for the fabrication of Al2O3-HfO2 eutectic EBC film on silicon carbide substrate. Optical zone melting method was applied for the fabrication method of the eutectic EBC film. At high temperature under light focusing, a small amount of silicon carbide decomposed into silicon and carbon and each component of the Al2O3 and HfO2 in molten phase reacts with the free carbon. And a small amount of A2O3 component reacts with the free carbon and vaporized from the molten phase. The composition of the molten phase becomes HfO2 rich. HfO2 phase is also reacts with die free carbon and HfC phase is solidified on the silicon carbide substrate. A high density intermediate layer consisted of HfC is formed. When the solidification process finished before all of HfO2 phase is reduced to HfC phase, HfC-HfO2 functionally graded layer is formed on the silicon carbide substrate. The Al2O3-HfO2: eutectic structure grows from the top of the intermediate layer.

元の言語英語
ホスト出版物のタイトルAdvanced and Refractory Ceramics for Energy Conservation and Efficiency
出版者American Ceramic Society
ページ65-72
ページ数8
ISBN(電子版)9781119234586
出版物ステータス出版済み - 1 1 2016
外部発表Yes
イベントAdvanced and Refractory Ceramics for Energy Conservation and Efficiency - 11th International Symposium on Ceramic Materials and Components for Energy and Environmental Applications, CMCEE 2015 - Vancouver, カナダ
継続期間: 6 14 20156 19 2015

出版物シリーズ

名前Ceramic Transactions
256
ISSN(印刷物)1042-1122

その他

その他Advanced and Refractory Ceramics for Energy Conservation and Efficiency - 11th International Symposium on Ceramic Materials and Components for Energy and Environmental Applications, CMCEE 2015
カナダ
Vancouver
期間6/14/156/19/15

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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  • これを引用

    Ueno, S., Seya, K., & Jang, B. (2016). Fabrication of ebc system with oxide eutectic structure. : Advanced and Refractory Ceramics for Energy Conservation and Efficiency (pp. 65-72). (Ceramic Transactions; 巻数 256). American Ceramic Society.