Abstract
To improve the self-lubrication and anti-ablation performances of C/C (carbon/carbon) composites from 25 to 800 °C, we engineered three layers of composite coatings consisting of SiC–VN–MoS2/Ta to deposit on the surface of the C/C composites. The tribology and anti-ablation properties of the composite coatings were experimented under dry sliding wear. The equivalent stress and deformation of the composite coatings are studied. The results show that the CoFs (coefficients of friction) of the C/C composites are decreased by 156% at 800 °C due to the new generated self-lubricating compounds from the MoS2/Ta and VN coating. The anti-ablation of the C/C composites are improved by 25,300% due to the silicon glass, and the generated compounds from V, Mo and Si. The deformation of the C/C substrate under the protection of these coatings looks like a quadrangular star. The cack of the C/C composites is easily generated without the protection from coatings.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Zhejiang Province
Natural Science Foundation of Ningbo
Open-foundation of Key Laboratory of Marine Materials and Related Technologies CAS, and Zhejiang Key Laboratory of Marine Materials and Protective Technologies
Subject
General Materials Science
Cited by
1 articles.
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