Damage Tolerance of Silicon Carbide- and Alumina-Matrix Surface Composites
A method for the fabrication of a ceramic‐matrix composite (CMC) layer on the surface of a monolithic substrate via chemical vapor infiltration (CVI) is described. Preforms consisted of tows of fibers wound onto the surface of monolithic cylindrical tubes. Nicalon fibers were wound onto mullite subs...
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| Veröffentlicht in: | Journal of the American Ceramic Society 1996-04, Vol.79 (4), p.1117-1120 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Day, P. S. Skamser, D. J. Faber, K. T. Jennings, H. M. Johnson, D. Lynn |
| description | A method for the fabrication of a ceramic‐matrix composite (CMC) layer on the surface of a monolithic substrate via chemical vapor infiltration (CVI) is described. Preforms consisted of tows of fibers wound onto the surface of monolithic cylindrical tubes. Nicalon fibers were wound onto mullite substrates and infiltrated with β‐SiC from CH3SiCl3/H2 gas mixtures in a cylindrical cold‐wall reactor. Similarly, Nextel fibers were wound onto A12O3 substrates and infiltrated with α‐Al2O3 from AlCl3/H2/CO2/N2 gas mixtures. Composites with densities as high as 88% of the theoretical value were fabricated in 8 h. The effective fracture strength of the SiC‐ and Al2O3‐matrix surface composites, as determined from diametral compression tests of C‐ring specimens, was found to be insensitive to damage caused to the outer diameter by a Vickers indentation. The tolerance of the SiC‐matrix surface composites to surface damage was retained in specimens subjected to oxidation at 1000°C for 6 h. |
| doi_str_mv | 10.1111/j.1151-2916.1996.tb08558.x |
| format | Article |
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S. ; Skamser, D. J. ; Faber, K. T. ; Jennings, H. M. ; Johnson, D. Lynn</creator><creatorcontrib>Day, P. S. ; Skamser, D. J. ; Faber, K. T. ; Jennings, H. M. ; Johnson, D. Lynn</creatorcontrib><description>A method for the fabrication of a ceramic‐matrix composite (CMC) layer on the surface of a monolithic substrate via chemical vapor infiltration (CVI) is described. Preforms consisted of tows of fibers wound onto the surface of monolithic cylindrical tubes. Nicalon fibers were wound onto mullite substrates and infiltrated with β‐SiC from CH3SiCl3/H2 gas mixtures in a cylindrical cold‐wall reactor. Similarly, Nextel fibers were wound onto A12O3 substrates and infiltrated with α‐Al2O3 from AlCl3/H2/CO2/N2 gas mixtures. Composites with densities as high as 88% of the theoretical value were fabricated in 8 h. The effective fracture strength of the SiC‐ and Al2O3‐matrix surface composites, as determined from diametral compression tests of C‐ring specimens, was found to be insensitive to damage caused to the outer diameter by a Vickers indentation. The tolerance of the SiC‐matrix surface composites to surface damage was retained in specimens subjected to oxidation at 1000°C for 6 h.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/j.1151-2916.1996.tb08558.x</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>ALUMINIUM OXIDES ; Applied sciences ; Building materials. Ceramics. 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S.</creatorcontrib><creatorcontrib>Skamser, D. J.</creatorcontrib><creatorcontrib>Faber, K. T.</creatorcontrib><creatorcontrib>Jennings, H. M.</creatorcontrib><creatorcontrib>Johnson, D. Lynn</creatorcontrib><title>Damage Tolerance of Silicon Carbide- and Alumina-Matrix Surface Composites</title><title>Journal of the American Ceramic Society</title><description>A method for the fabrication of a ceramic‐matrix composite (CMC) layer on the surface of a monolithic substrate via chemical vapor infiltration (CVI) is described. Preforms consisted of tows of fibers wound onto the surface of monolithic cylindrical tubes. Nicalon fibers were wound onto mullite substrates and infiltrated with β‐SiC from CH3SiCl3/H2 gas mixtures in a cylindrical cold‐wall reactor. Similarly, Nextel fibers were wound onto A12O3 substrates and infiltrated with α‐Al2O3 from AlCl3/H2/CO2/N2 gas mixtures. Composites with densities as high as 88% of the theoretical value were fabricated in 8 h. The effective fracture strength of the SiC‐ and Al2O3‐matrix surface composites, as determined from diametral compression tests of C‐ring specimens, was found to be insensitive to damage caused to the outer diameter by a Vickers indentation. The tolerance of the SiC‐matrix surface composites to surface damage was retained in specimens subjected to oxidation at 1000°C for 6 h.</description><subject>ALUMINIUM OXIDES</subject><subject>Applied sciences</subject><subject>Building materials. Ceramics. Glasses</subject><subject>BULK DENSITY</subject><subject>CARBON DIOXIDE</subject><subject>Ceramic industries</subject><subject>Chemical industry and chemicals</subject><subject>CHEMICAL REACTIONS</subject><subject>CHEMICAL VAPOR DEPOSITION</subject><subject>CHLORIDES</subject><subject>COMPOSITE MATERIALS</subject><subject>Exact sciences and technology</subject><subject>FIBERS</subject><subject>FRACTURE PROPERTIES</subject><subject>HYDROGEN</subject><subject>IMPREGNATION</subject><subject>MATERIALS SCIENCE</subject><subject>MULLITE</subject><subject>NITROGEN</subject><subject>ORGANOMETALLIC COMPOUNDS</subject><subject>SILICON CARBIDES</subject><subject>Structural ceramics</subject><subject>SUBSTRATES</subject><subject>Technical ceramics</subject><subject>TEMPERATURE GRADIENTS</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNqVkF1v0zAUhi3EJMrGfwgIcZfOH4ntcEUVRtlW2KQOcXnkODa4JHFnp6L79zhKtXt8c2T58fsePQi9I3hJ0rncpVGSnFaEL0lV8eXYYFmWcnl8gRakPD29RAuMMc2FpPgVeh3jLl1JJYsFuvmsevXLZA--M0EN2mTeZlvXOe2HrFahca3JMzW02ao79G5Q-Tc1BnfMtodgVcJr3-99dKOJF-jMqi6aN6d5jn58uXqov-abu_V1vdrkuhBS5NSQgjDSWmxZgYltCmpM1TBGrVQN55aWggrWCiaZ5FjIhrYtF7goTEs5ZuwcvZ1zfRwdRJ269e-07mD0CLQQFSOJ-TAz--AfDyaO0LuoTdepwfhDBMoJrgimCfw4gzr4GIOxsA-uV-EJCIZJMexgUgyTR5gUw0kxHNPn96cWFbXq7CTQxecEhnnaVyTs04z9dZ15-o8CuFnVVwmZIvI5wsXRHJ8jVPgDXDBRws_va9jcrnF5u70Hwv4B7Iidfw</recordid><startdate>199604</startdate><enddate>199604</enddate><creator>Day, P. S.</creator><creator>Skamser, D. J.</creator><creator>Faber, K. T.</creator><creator>Jennings, H. M.</creator><creator>Johnson, D. Lynn</creator><general>Blackwell Publishing Ltd</general><general>Blackwell</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>199604</creationdate><title>Damage Tolerance of Silicon Carbide- and Alumina-Matrix Surface Composites</title><author>Day, P. S. ; Skamser, D. J. ; Faber, K. T. ; Jennings, H. M. ; Johnson, D. Lynn</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4787-2e14131df0f3401fb42ee9b332f8ab66f257273d738386078b2dd67044ed26033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>ALUMINIUM OXIDES</topic><topic>Applied sciences</topic><topic>Building materials. Ceramics. Glasses</topic><topic>BULK DENSITY</topic><topic>CARBON DIOXIDE</topic><topic>Ceramic industries</topic><topic>Chemical industry and chemicals</topic><topic>CHEMICAL REACTIONS</topic><topic>CHEMICAL VAPOR DEPOSITION</topic><topic>CHLORIDES</topic><topic>COMPOSITE MATERIALS</topic><topic>Exact sciences and technology</topic><topic>FIBERS</topic><topic>FRACTURE PROPERTIES</topic><topic>HYDROGEN</topic><topic>IMPREGNATION</topic><topic>MATERIALS SCIENCE</topic><topic>MULLITE</topic><topic>NITROGEN</topic><topic>ORGANOMETALLIC COMPOUNDS</topic><topic>SILICON CARBIDES</topic><topic>Structural ceramics</topic><topic>SUBSTRATES</topic><topic>Technical ceramics</topic><topic>TEMPERATURE GRADIENTS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Day, P. S.</creatorcontrib><creatorcontrib>Skamser, D. J.</creatorcontrib><creatorcontrib>Faber, K. T.</creatorcontrib><creatorcontrib>Jennings, H. M.</creatorcontrib><creatorcontrib>Johnson, D. 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Lynn</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Damage Tolerance of Silicon Carbide- and Alumina-Matrix Surface Composites</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>1996-04</date><risdate>1996</risdate><volume>79</volume><issue>4</issue><spage>1117</spage><epage>1120</epage><pages>1117-1120</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>A method for the fabrication of a ceramic‐matrix composite (CMC) layer on the surface of a monolithic substrate via chemical vapor infiltration (CVI) is described. Preforms consisted of tows of fibers wound onto the surface of monolithic cylindrical tubes. Nicalon fibers were wound onto mullite substrates and infiltrated with β‐SiC from CH3SiCl3/H2 gas mixtures in a cylindrical cold‐wall reactor. Similarly, Nextel fibers were wound onto A12O3 substrates and infiltrated with α‐Al2O3 from AlCl3/H2/CO2/N2 gas mixtures. Composites with densities as high as 88% of the theoretical value were fabricated in 8 h. The effective fracture strength of the SiC‐ and Al2O3‐matrix surface composites, as determined from diametral compression tests of C‐ring specimens, was found to be insensitive to damage caused to the outer diameter by a Vickers indentation. The tolerance of the SiC‐matrix surface composites to surface damage was retained in specimens subjected to oxidation at 1000°C for 6 h.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1151-2916.1996.tb08558.x</doi><tpages>4</tpages></addata></record> |
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| ispartof | Journal of the American Ceramic Society, 1996-04, Vol.79 (4), p.1117-1120 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | ALUMINIUM OXIDES Applied sciences Building materials. Ceramics. Glasses BULK DENSITY CARBON DIOXIDE Ceramic industries Chemical industry and chemicals CHEMICAL REACTIONS CHEMICAL VAPOR DEPOSITION CHLORIDES COMPOSITE MATERIALS Exact sciences and technology FIBERS FRACTURE PROPERTIES HYDROGEN IMPREGNATION MATERIALS SCIENCE MULLITE NITROGEN ORGANOMETALLIC COMPOUNDS SILICON CARBIDES Structural ceramics SUBSTRATES Technical ceramics TEMPERATURE GRADIENTS |
| title | Damage Tolerance of Silicon Carbide- and Alumina-Matrix Surface Composites |
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