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Carbon coating with combined super-hydrophobic and self-lubricating properties on titanium silicon carbide |
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| Authors: | Jian Sui Yanjie Zhang Shufang Ren Monika Rinke Junhong Jia |
| Affiliation: | a State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China b Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China c Forschungszentrum Karlsruhe, Institute for Materials Research I, Karlsruhe 76021, Germany |
| Abstract: | Carbon coating on Ti3SiC2 with combined super-hydrophobic and self-lubricating properties was synthesized by chlorination at 1000 °C followed by modification of the CF3(CF2)5CH2CH2SiCl3 film. Raman spectroscopy confirmed the conversion from Ti3SiC2 to highly graphitized carbon coating. Scanning electron microscopy observation showed a highly porous microstructure of graphite flakes on the coating surface. The porous structure as well as organic film on carbon coating endowed the surface with super-hydrophobic property. Because of chemical inertia of the carbon coating and the modifier, the super-hydrophobic surface was very stable under various environments. Carbon coating was a good solid lubricant and greatly reduced friction coefficient of Ti3SiC2 sliding against Si3N4, which was important for Ti3SiC2 used as engineering material. |
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