ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
The fracture toughness increases but the long-term oxidation resistance of carbon short fiberreinforced C/SiC composites decreases if the volume fraction of carbon fibers is high. Tounderstand the oxidation kinetic and their dependence from the C/SiC microstructure thecomposites and also the used carbon short fiber bundles were investigated by a thermo balance andby scanning electron microscopy. Additionally the oxidation of single carbon short fibers wasmeasured in situ by a hot stage light microscope. To simulate oxidation kinetics a software programusing Finite Element methods was developed. Below 800 °C oxidation resistance can be improvedby increasing the degree of graphitization of the carbon material within the short fiber bundles.Above 800 °C the number of junctions between the short fiber bundles has to be reduced
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.1489.pdf
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