High-Speed Deposition of SiC Thick Film by Halide Precursor

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Polycrystalline ڂ˽SiC thick film with mm-scaled thickness was deposited on a graphite substrate using a gaseous mixture of SiCl4 + CH4 and H2 at temperatures ranging from 1573 to 1823 K by chemical vapor deposition. Effect of deposition temperature (Tdep) on deposition rate, surface morphology and preferred orientation has been studied. The preferred orientation changed from <111> to <110> with increasing Tdep. The maximum deposition rate (Rdep) of 1125 ڌ̽˰̸1 has been obtained. The surface morphology has changed from six-fold pyramid to five-fold facet with increasing Tdep.

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37-42

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June 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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