2013 Fiscal Year Final Research Report
Development and oxidation resistance of continuous SiC fiber-reinforced porous SiC matrix (SiC/porous SiC) composites with high strength and ductility
| Project/Area Number |
24760560
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | National Institute for Materials Science (2013)
Kyoto University (2012) |
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Principal Investigator |
SHIMODA KAZUYA 独立行政法人物質・材料研究機構, その他部局等, 研究員 (40512033)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 炭化ケイ素 / セラミックス基複合材料 / ポーラス / 耐酸化性 / 耐水蒸気耐性 |
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| Research Abstract |
New material concept of continuous SiC fiber-reinforced porous SiC matrix (SiC/porous SiC) composites has been invented for the development of ultra-high temperature materials with high oxidation/corrosion resistance and excellent high-temperature strength over 1000 C. In this study, innovative SiC-based composites without any interface between fiber and matrix like carbon have been successfully developed. The composites showed pseudo-ductile behavior and complicated fracture behavior due to enhanced debonding at fiber/matrix interface and frictional stress at the debonded fiber/matrix interface. The porous SiC composites were exposed at elevated temperature up to 1100 C in air. No apparent degradation of flexural strength was observed compared to that of the as-received material. Another fabrication route have been proposed from the view point of the reduced production cost and demonstrated.
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