The present invention relates to a process for producing a silicon carbide and alumina component by flowing an inert gas into a raw material containing silicon dioxide and an alumina component while heating to reach a desired reaction temperature and then flowing a mixed gas of carbon fluoride and hydrogen or a mixed gas of carbon fluoride, To a mullite whisker by collecting the synthesized product after the reaction time of the mullite whisker has elapsed.;According to the present invention, by using carbon fluoride as a reactant, the synthesis process is simplified and the cost is reduced as compared with the conventional mullite whisker production method, the synthesis reaction occurs uniformly throughout the raw material, and the mullite whisker The advantage is obtained.
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