Fabrication of Continuous-Fiber-Reinforced Polycrystalline Oxide Composites via Molten Salt Infiltration
A novel molten nitrate salt infiltration technique was developed for the fabrication of continuous‐fiber‐reinforced polycrystalline‐alumina‐matrix composites containing a high volume fraction (47%) of small‐diameter fibers (Du Pont PRD 166 alumina/zirconia; 20‐μm diameter). A single infiltration res...
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| Veröffentlicht in: | Journal of the American Ceramic Society 1994-05, Vol.77 (5), p.1361-1365 |
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| creator | Chou, Yeong-Shyung Ramberg, C. Eric Hellmann, John R. |
| description | A novel molten nitrate salt infiltration technique was developed for the fabrication of continuous‐fiber‐reinforced polycrystalline‐alumina‐matrix composites containing a high volume fraction (47%) of small‐diameter fibers (Du Pont PRD 166 alumina/zirconia; 20‐μm diameter). A single infiltration resulted in sufficient matrix yield to permit densification of the resulting composites to >93% of theoretical density with excellent microstructural uniformity. Hot‐pressed composites fabricated in this manner exhibited Young's modulus of 270GPa, flexural strengths of 272 ± 20 MPa, and fracture toughness of 3.35 ± 0.37 MPa·ml/2. Primary fracture origins were localized regions of interfiber porosity, which were attributed to incomplete fiber tow infiltration. Fractographic analysis revealed lack of fiber pullout, and emphasized the need for interfacial debonding agents (coatings) to achieve further toughening. Results have demonstrated the utility of molten‐salt‐matrix precursors for the fabrication of polycrystalline‐matrix composites containing high volume fractions of continuous, small‐diameter ceramic fibers. |
| doi_str_mv | 10.1111/j.1151-2916.1994.tb05416.x |
| format | Article |
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Eric ; Hellmann, John R.</creator><creatorcontrib>Chou, Yeong-Shyung ; Ramberg, C. Eric ; Hellmann, John R.</creatorcontrib><description>A novel molten nitrate salt infiltration technique was developed for the fabrication of continuous‐fiber‐reinforced polycrystalline‐alumina‐matrix composites containing a high volume fraction (47%) of small‐diameter fibers (Du Pont PRD 166 alumina/zirconia; 20‐μm diameter). A single infiltration resulted in sufficient matrix yield to permit densification of the resulting composites to >93% of theoretical density with excellent microstructural uniformity. Hot‐pressed composites fabricated in this manner exhibited Young's modulus of 270GPa, flexural strengths of 272 ± 20 MPa, and fracture toughness of 3.35 ± 0.37 MPa·ml/2. Primary fracture origins were localized regions of interfiber porosity, which were attributed to incomplete fiber tow infiltration. Fractographic analysis revealed lack of fiber pullout, and emphasized the need for interfacial debonding agents (coatings) to achieve further toughening. Results have demonstrated the utility of molten‐salt‐matrix precursors for the fabrication of polycrystalline‐matrix composites containing high volume fractions of continuous, small‐diameter ceramic fibers.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/j.1151-2916.1994.tb05416.x</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>360601 - Other Materials- Preparation & Manufacture ; 360603 - Materials- Properties ; ALUMINIUM COMPOUNDS ; ALUMINIUM OXIDES ; Applied sciences ; Building materials. Ceramics. 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Eric</creatorcontrib><creatorcontrib>Hellmann, John R.</creatorcontrib><title>Fabrication of Continuous-Fiber-Reinforced Polycrystalline Oxide Composites via Molten Salt Infiltration</title><title>Journal of the American Ceramic Society</title><description>A novel molten nitrate salt infiltration technique was developed for the fabrication of continuous‐fiber‐reinforced polycrystalline‐alumina‐matrix composites containing a high volume fraction (47%) of small‐diameter fibers (Du Pont PRD 166 alumina/zirconia; 20‐μm diameter). A single infiltration resulted in sufficient matrix yield to permit densification of the resulting composites to >93% of theoretical density with excellent microstructural uniformity. Hot‐pressed composites fabricated in this manner exhibited Young's modulus of 270GPa, flexural strengths of 272 ± 20 MPa, and fracture toughness of 3.35 ± 0.37 MPa·ml/2. Primary fracture origins were localized regions of interfiber porosity, which were attributed to incomplete fiber tow infiltration. Fractographic analysis revealed lack of fiber pullout, and emphasized the need for interfacial debonding agents (coatings) to achieve further toughening. Results have demonstrated the utility of molten‐salt‐matrix precursors for the fabrication of polycrystalline‐matrix composites containing high volume fractions of continuous, small‐diameter ceramic fibers.</description><subject>360601 - Other Materials- Preparation & Manufacture</subject><subject>360603 - Materials- Properties</subject><subject>ALUMINIUM COMPOUNDS</subject><subject>ALUMINIUM OXIDES</subject><subject>Applied sciences</subject><subject>Building materials. Ceramics. 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Eric ; Hellmann, John R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3861-2fbe164002b90e652e1ed4a58277038d2846666ca016d7c3b3ed24d37da30feb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>360601 - Other Materials- Preparation & Manufacture</topic><topic>360603 - Materials- Properties</topic><topic>ALUMINIUM COMPOUNDS</topic><topic>ALUMINIUM OXIDES</topic><topic>Applied sciences</topic><topic>Building materials. Ceramics. Glasses</topic><topic>Ceramic industries</topic><topic>CHALCOGENIDES</topic><topic>Chemical industry and chemicals</topic><topic>COMPOSITE MATERIALS</topic><topic>DATA</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>FABRICATION</topic><topic>FIBERS</topic><topic>FRACTURE PROPERTIES</topic><topic>HEAT RESISTANT MATERIALS</topic><topic>IMPREGNATION</topic><topic>INFORMATION</topic><topic>MATERIALS</topic><topic>MATERIALS SCIENCE</topic><topic>MECHANICAL PROPERTIES</topic><topic>NUMERICAL DATA</topic><topic>OXIDES</topic><topic>OXYGEN COMPOUNDS</topic><topic>Structural ceramics</topic><topic>Technical ceramics</topic><topic>TRANSITION ELEMENT COMPOUNDS</topic><topic>ZIRCONIUM COMPOUNDS</topic><topic>ZIRCONIUM OXIDES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chou, Yeong-Shyung</creatorcontrib><creatorcontrib>Ramberg, C. Eric</creatorcontrib><creatorcontrib>Hellmann, John R.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>OSTI.GOV</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chou, Yeong-Shyung</au><au>Ramberg, C. Eric</au><au>Hellmann, John R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fabrication of Continuous-Fiber-Reinforced Polycrystalline Oxide Composites via Molten Salt Infiltration</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>1994-05</date><risdate>1994</risdate><volume>77</volume><issue>5</issue><spage>1361</spage><epage>1365</epage><pages>1361-1365</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>A novel molten nitrate salt infiltration technique was developed for the fabrication of continuous‐fiber‐reinforced polycrystalline‐alumina‐matrix composites containing a high volume fraction (47%) of small‐diameter fibers (Du Pont PRD 166 alumina/zirconia; 20‐μm diameter). A single infiltration resulted in sufficient matrix yield to permit densification of the resulting composites to >93% of theoretical density with excellent microstructural uniformity. Hot‐pressed composites fabricated in this manner exhibited Young's modulus of 270GPa, flexural strengths of 272 ± 20 MPa, and fracture toughness of 3.35 ± 0.37 MPa·ml/2. Primary fracture origins were localized regions of interfiber porosity, which were attributed to incomplete fiber tow infiltration. Fractographic analysis revealed lack of fiber pullout, and emphasized the need for interfacial debonding agents (coatings) to achieve further toughening. Results have demonstrated the utility of molten‐salt‐matrix precursors for the fabrication of polycrystalline‐matrix composites containing high volume fractions of continuous, small‐diameter ceramic fibers.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1151-2916.1994.tb05416.x</doi><tpages>5</tpages></addata></record> |
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| subjects | 360601 - Other Materials- Preparation & Manufacture 360603 - Materials- Properties ALUMINIUM COMPOUNDS ALUMINIUM OXIDES Applied sciences Building materials. Ceramics. Glasses Ceramic industries CHALCOGENIDES Chemical industry and chemicals COMPOSITE MATERIALS DATA Exact sciences and technology EXPERIMENTAL DATA FABRICATION FIBERS FRACTURE PROPERTIES HEAT RESISTANT MATERIALS IMPREGNATION INFORMATION MATERIALS MATERIALS SCIENCE MECHANICAL PROPERTIES NUMERICAL DATA OXIDES OXYGEN COMPOUNDS Structural ceramics Technical ceramics TRANSITION ELEMENT COMPOUNDS ZIRCONIUM COMPOUNDS ZIRCONIUM OXIDES |
| title | Fabrication of Continuous-Fiber-Reinforced Polycrystalline Oxide Composites via Molten Salt Infiltration |
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