Boron migration in boron-doped carbon/carbon composites
Boron in the form of a carborane compound has been shown to be an effective means of accelerating the graphitization of thermosetting-resin-derived matrices within C/C composites. However, diffusion of B into the fiber can be detrimental to the tensile strength of the composites. Such diffusion must...
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| Veröffentlicht in: | Carbon (New York) 1992, Vol.30 (4), p.711-714 |
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| creator | Zaldivar, R.J. Kobayashi, R.W. Rellick, G.S. Yang, J.-M. |
| description | Boron in the form of a carborane compound has been shown to be an effective means of accelerating the graphitization of thermosetting-resin-derived matrices within C/C composites. However, diffusion of B into the fiber can be detrimental to the tensile strength of the composites. Such diffusion must be controlled to achieve the positive attributes of a graphitizable matrix without the deleterious effects of fiber strength degradation. The type of fiber used (e.g. T50, E35 and E130) has been shown to be a major factor in affecting additional fiber graphitization. Well-graphitized fibers, such as the E130, are more resistant to substitutional B and, therefore, to further graphitization, with its concomitant strength reduction. Poorly graphitized fibers, such as those derived from PAN, are much more readily altered in structure by the B dopant. |
| doi_str_mv | 10.1016/0008-6223(92)90189-4 |
| format | Article |
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However, diffusion of B into the fiber can be detrimental to the tensile strength of the composites. Such diffusion must be controlled to achieve the positive attributes of a graphitizable matrix without the deleterious effects of fiber strength degradation. The type of fiber used (e.g. T50, E35 and E130) has been shown to be a major factor in affecting additional fiber graphitization. Well-graphitized fibers, such as the E130, are more resistant to substitutional B and, therefore, to further graphitization, with its concomitant strength reduction. Poorly graphitized fibers, such as those derived from PAN, are much more readily altered in structure by the B dopant.</description><identifier>ISSN: 0008-6223</identifier><identifier>EISSN: 1873-3891</identifier><identifier>DOI: 10.1016/0008-6223(92)90189-4</identifier><identifier>CODEN: CRBNAH</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; boron ; Building materials. Ceramics. 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However, diffusion of B into the fiber can be detrimental to the tensile strength of the composites. Such diffusion must be controlled to achieve the positive attributes of a graphitizable matrix without the deleterious effects of fiber strength degradation. The type of fiber used (e.g. T50, E35 and E130) has been shown to be a major factor in affecting additional fiber graphitization. Well-graphitized fibers, such as the E130, are more resistant to substitutional B and, therefore, to further graphitization, with its concomitant strength reduction. Poorly graphitized fibers, such as those derived from PAN, are much more readily altered in structure by the B dopant.</description><subject>Applied sciences</subject><subject>boron</subject><subject>Building materials. Ceramics. Glasses</subject><subject>Carbon/carbon composites</subject><subject>catalysis R.J. Zaldivar</subject><subject>Ceramic industries</subject><subject>Chemical industry and chemicals</subject><subject>Exact sciences and technology</subject><subject>Structural ceramics</subject><subject>Technical ceramics</subject><issn>0008-6223</issn><issn>1873-3891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-Aw89iOihbr6aJhdBF79gwYueQ5pOJNI2NekK_ntbu-zRucwHz7zDvAidE3xDMBErjLHMBaXsStFrhYlUOT9ACyJLljOpyCFa7JFjdJLS59hySfgClfchhi5r_Uc0gx8r32XVNMrr0EOdWROr0K3mlNnQ9iH5AdIpOnKmSXC2y0v0_vjwtn7ON69PL-u7TW6Z4EPuQADHlQAqMZiqZowDNYaJ0lksKkJ56YxTzpZCUFWBMIJargQ1RW1cKdkSXc66fQxfW0iDbn2y0DSmg7BNmhZjUEZGkM-gjSGlCE730bcm_miC9eSSnizQkwVaUf3nkubj2sVO3yRrGhdNZ33a7xZMFlKyEbudMRh__fYQdbIeOgu1j2AHXQf__51fay57HQ</recordid><startdate>1992</startdate><enddate>1992</enddate><creator>Zaldivar, R.J.</creator><creator>Kobayashi, R.W.</creator><creator>Rellick, G.S.</creator><creator>Yang, J.-M.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>1992</creationdate><title>Boron migration in boron-doped carbon/carbon composites</title><author>Zaldivar, R.J. ; Kobayashi, R.W. ; Rellick, G.S. ; Yang, J.-M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-fe6e40b6e280eabd334e2aa367fc06b1247faf9fc76629be6a62c4962a5daf783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Applied sciences</topic><topic>boron</topic><topic>Building materials. Ceramics. Glasses</topic><topic>Carbon/carbon composites</topic><topic>catalysis R.J. Zaldivar</topic><topic>Ceramic industries</topic><topic>Chemical industry and chemicals</topic><topic>Exact sciences and technology</topic><topic>Structural ceramics</topic><topic>Technical ceramics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zaldivar, R.J.</creatorcontrib><creatorcontrib>Kobayashi, R.W.</creatorcontrib><creatorcontrib>Rellick, G.S.</creatorcontrib><creatorcontrib>Yang, J.-M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Carbon (New York)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zaldivar, R.J.</au><au>Kobayashi, R.W.</au><au>Rellick, G.S.</au><au>Yang, J.-M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Boron migration in boron-doped carbon/carbon composites</atitle><jtitle>Carbon (New York)</jtitle><date>1992</date><risdate>1992</risdate><volume>30</volume><issue>4</issue><spage>711</spage><epage>714</epage><pages>711-714</pages><issn>0008-6223</issn><eissn>1873-3891</eissn><coden>CRBNAH</coden><abstract>Boron in the form of a carborane compound has been shown to be an effective means of accelerating the graphitization of thermosetting-resin-derived matrices within C/C composites. However, diffusion of B into the fiber can be detrimental to the tensile strength of the composites. Such diffusion must be controlled to achieve the positive attributes of a graphitizable matrix without the deleterious effects of fiber strength degradation. The type of fiber used (e.g. T50, E35 and E130) has been shown to be a major factor in affecting additional fiber graphitization. Well-graphitized fibers, such as the E130, are more resistant to substitutional B and, therefore, to further graphitization, with its concomitant strength reduction. Poorly graphitized fibers, such as those derived from PAN, are much more readily altered in structure by the B dopant.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/0008-6223(92)90189-4</doi><tpages>4</tpages></addata></record> |
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| ispartof | Carbon (New York), 1992, Vol.30 (4), p.711-714 |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences boron Building materials. Ceramics. Glasses Carbon/carbon composites catalysis R.J. Zaldivar Ceramic industries Chemical industry and chemicals Exact sciences and technology Structural ceramics Technical ceramics |
| title | Boron migration in boron-doped carbon/carbon composites |
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