Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 99, Issue 6, Pages 1855-1858Publisher
WILEY-BLACKWELL
DOI: 10.1111/jace.14145
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Funding
- National Science Foundation from Ceramics Program in the Division of Materials Research [0907108]
- STTR program [1549688]
- US AFOSR [FA8655-12-1-3004]
- FIRB [RBFR12T1T1]
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1549688] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907108] Funding Source: National Science Foundation
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The potential of polymer-derived ceramic matrices for silicon-carbide fiber composites is demonstrated by additive layering of thin films on SiC fiber bundles. The thin liquid films, which naturally wet the fiber surfaces, are cross-linked and pyrolyzed in-situ into the silicon carbonitride ceramic in just a few seconds to yield defect-free layers that are 10 to 100 nm thick. The infiltration is completed by repeating the cycles. A nearly fully dense and defect free SiCN matrix could be obtained. Room-temperature tensile tests show a tensile strength of similar to 1200 MPa. Good matrix-fiber interface behavior is seen with pull-out character which is most likely responsible for the apparent ductility. The SiC fibers were uncoated.
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