Development of Advanced Self-Healing Ceramics Including Remodeling Mechanism

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760093
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: National Institute for Materials Science (2013-2014); Yokohama National University (2012)
• Principal Investigator: OSADA Toshio 独立行政法人物質・材料研究機構, 構造材料ユニット, 研究員 (50596343)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 耐熱材料 / 自己治癒材料 / セラミックス / 破壊力学

Outline of Final Research Achievements

Our final target in this project is to overcome the reliability issues in brittle oxide based ceramics composite by using self-crack-healing function bioinspired from human compact bone. The function allows the self-healing ceramics to be an attractive candidate for the next-generation turbine blade materials. We here try to clarify the self-healing mechanics and to propose the model for strength recovery in the oxidation-induced self-healing ceramics as an example of alumina/SiC composites. The predicted strength recovery rate showed in good agreement with experimental values. Thus, the model will be a useful to establish the design guide of next-generation self-healing ceramics for the jet engine applications.

Free Research Field

材料工学