(State key Laboratory of Powder Metallurgy, Central South University, Changsha 410083,China)
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Abstract:
To improve the anti ablative properties of carbon/carbon (C/C) composites, the controlled preparation of zirconium carbide (ZrC) coatings of superstoichiometric, stoichiometric, and substoichiometric compositions has been achieved utilizing zirconium tetrachloride and propene precursor gases in an atmospheric pressure chemical vapor deposition system. The ablative properties of coated samples were tested in an oxyacetylene torch system. The phase compositions and morphological features of the coatings were investigated pre and post test. The results show that all types of ZrC coatings can protect C/C substrate from ablation.