Mullite/Alumina Mixtures for Use as Porous Matrices in Oxide Fiber Composites
Weakly bonded particle mixtures of mullite and alumina are assessed as candidate matrixes for use in porous matrix ceramic composites. Conditions for the deflection of a matrix crack at a fiber‐matrix interface are used to identify the combinations of modulus and toughness of the fibers and the matr...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2004-02, Vol.87 (2), p.261-267 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Fujita, Hiroki Jefferson, George McMeeking, Robert M. Zok, Frank W. |
| description | Weakly bonded particle mixtures of mullite and alumina are assessed as candidate matrixes for use in porous matrix ceramic composites. Conditions for the deflection of a matrix crack at a fiber‐matrix interface are used to identify the combinations of modulus and toughness of the fibers and the matrix for which damage‐tolerant behavior is expected to occur in the composite. Accordingly, the present study focuses on the modulus and toughness of the particle mixtures, as well as the changes in these properties following aging at elevated temperature comparable to the targeted upper‐use temperature for oxide composites. Models based on bonded particle aggregates are presented, assessed, and calibrated. The experimental and modeling results are combined to predict the critical aging times at which damage tolerance is lost because of sintering at the particle junctions and the associated changes in mechanical properties. For an aging temperature of 1200°C, the critical time exceeds 10 000 h for the mullite‐rich mixtures. |
| doi_str_mv | 10.1111/j.1551-2916.2004.00261.x |
| format | Article |
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Conditions for the deflection of a matrix crack at a fiber‐matrix interface are used to identify the combinations of modulus and toughness of the fibers and the matrix for which damage‐tolerant behavior is expected to occur in the composite. Accordingly, the present study focuses on the modulus and toughness of the particle mixtures, as well as the changes in these properties following aging at elevated temperature comparable to the targeted upper‐use temperature for oxide composites. Models based on bonded particle aggregates are presented, assessed, and calibrated. The experimental and modeling results are combined to predict the critical aging times at which damage tolerance is lost because of sintering at the particle junctions and the associated changes in mechanical properties. 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Conditions for the deflection of a matrix crack at a fiber‐matrix interface are used to identify the combinations of modulus and toughness of the fibers and the matrix for which damage‐tolerant behavior is expected to occur in the composite. Accordingly, the present study focuses on the modulus and toughness of the particle mixtures, as well as the changes in these properties following aging at elevated temperature comparable to the targeted upper‐use temperature for oxide composites. Models based on bonded particle aggregates are presented, assessed, and calibrated. The experimental and modeling results are combined to predict the critical aging times at which damage tolerance is lost because of sintering at the particle junctions and the associated changes in mechanical properties. For an aging temperature of 1200°C, the critical time exceeds 10 000 h for the mullite‐rich mixtures.</description><subject>Alumina</subject><subject>Applied sciences</subject><subject>Building materials. Ceramics. Glasses</subject><subject>Ceramic industries</subject><subject>Cermets, ceramic and refractory composites</subject><subject>Chemical industry and chemicals</subject><subject>Composite materials</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Fibers</subject><subject>Materials science</subject><subject>Miscellaneous</subject><subject>mullite</subject><subject>Other materials</subject><subject>Oxidation</subject><subject>Physics</subject><subject>Porous materials</subject><subject>Specific materials</subject><subject>Technical ceramics</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqNkUFv3CAQhVHVSN2m-Q-oUnuzA9gYOPSwsrJpo3iTQ6L2NsIEJLZeewu26vz74myUSD2FCzDzvSeYhxCmJKdpne9yyjnNmKJVzggpc0JYRfP5HVq9NN6jFUnlTEhGPqCPMe7SlSpZrlDTTF3nR3u-7qa97zVu_DxOwUbshoDvo8U64tshDFPEjR6DN6nle3wz-weLN761AdfD_jDEZBI_oROnu2jPnvdTdL-5uKu_Z9c3lz_q9XVmykrSzDlJXVuYtqWK8-LBqLYVRCteEKFSRSgnnSamatOSyuiKs5IwWjJOKbO0OEVfj76HMPyZbBxh76OxXad7m14KTLKSS1K-BWRKKJLAz_-Bu2EKffoEMCpUQSq1uMkjZMIQY7AODsHvdXgESmBJA3awDB2WocOSBjylAXOSfnn219HozgXdGx9f9ZynSAqWuG9H7q_v7OOb_eFqXV-kU9JnR72Po51f9Dr8hkoUgsPP7SXUfHvViF8b2Bb_AKpBqko</recordid><startdate>200402</startdate><enddate>200402</enddate><creator>Fujita, Hiroki</creator><creator>Jefferson, George</creator><creator>McMeeking, Robert M.</creator><creator>Zok, Frank W.</creator><general>American Ceramics Society</general><general>Blackwell</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>200402</creationdate><title>Mullite/Alumina Mixtures for Use as Porous Matrices in Oxide Fiber Composites</title><author>Fujita, Hiroki ; Jefferson, George ; McMeeking, Robert M. ; Zok, Frank W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4681-ff81fb3cbb19553dc9bb70a95307995579f8fa0c6bbbb89ca6524021425112e13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Alumina</topic><topic>Applied sciences</topic><topic>Building materials. Ceramics. Glasses</topic><topic>Ceramic industries</topic><topic>Cermets, ceramic and refractory composites</topic><topic>Chemical industry and chemicals</topic><topic>Composite materials</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>Fibers</topic><topic>Materials science</topic><topic>Miscellaneous</topic><topic>mullite</topic><topic>Other materials</topic><topic>Oxidation</topic><topic>Physics</topic><topic>Porous materials</topic><topic>Specific materials</topic><topic>Technical ceramics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fujita, Hiroki</creatorcontrib><creatorcontrib>Jefferson, George</creatorcontrib><creatorcontrib>McMeeking, Robert M.</creatorcontrib><creatorcontrib>Zok, Frank W.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fujita, Hiroki</au><au>Jefferson, George</au><au>McMeeking, Robert M.</au><au>Zok, Frank W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mullite/Alumina Mixtures for Use as Porous Matrices in Oxide Fiber Composites</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2004-02</date><risdate>2004</risdate><volume>87</volume><issue>2</issue><spage>261</spage><epage>267</epage><pages>261-267</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>Weakly bonded particle mixtures of mullite and alumina are assessed as candidate matrixes for use in porous matrix ceramic composites. Conditions for the deflection of a matrix crack at a fiber‐matrix interface are used to identify the combinations of modulus and toughness of the fibers and the matrix for which damage‐tolerant behavior is expected to occur in the composite. Accordingly, the present study focuses on the modulus and toughness of the particle mixtures, as well as the changes in these properties following aging at elevated temperature comparable to the targeted upper‐use temperature for oxide composites. Models based on bonded particle aggregates are presented, assessed, and calibrated. The experimental and modeling results are combined to predict the critical aging times at which damage tolerance is lost because of sintering at the particle junctions and the associated changes in mechanical properties. 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| fulltext | fulltext |
| identifier | ISSN: 0002-7820 |
| ispartof | Journal of the American Ceramic Society, 2004-02, Vol.87 (2), p.261-267 |
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| language | eng |
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| source | Wiley Journals |
| subjects | Alumina Applied sciences Building materials. Ceramics. Glasses Ceramic industries Cermets, ceramic and refractory composites Chemical industry and chemicals Composite materials Cross-disciplinary physics: materials science rheology Exact sciences and technology Fibers Materials science Miscellaneous mullite Other materials Oxidation Physics Porous materials Specific materials Technical ceramics |
| title | Mullite/Alumina Mixtures for Use as Porous Matrices in Oxide Fiber Composites |
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