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Study of the radiation resistance of a carbon fiber based on viscose in carbon-carbon and carbon-ceramic composites

Journal of Surface Investigation, ISSN: 1819-7094, Vol: 8, Issue: 2, Page: 211-215
2014
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The results of the experimental study of the crystalline structure and morphology of carbon fibers based on viscose in a FEBUS carbon-ceramic composite and its preform as functions of temperature ranging from room values to ∼400°C under irradiation with Ar ions with an energy of 10-30 keV are obtained. The average level of radiation damage corresponding to the initial fiber graphitization (〈ν> ∼ 80 dpa) is determined based on an analysis of the energy dependences of the ion-electron emission coefficient at different irradiation temperatures. It is shown that carbon fibers based on viscose are immune (in contrast to polyacrylonitrile fibers) to ion-induced destruction in the form of crimping. This is indicative of their enhanced radiation resistance. © 2014 Pleiades Publishing, Ltd.

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