期刊
PLASMA PROCESSES AND POLYMERS
卷 4, 期 -, 页码 S946-S951出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200732305
关键词
films; kinetics; plasma-enhanced chemical vapor deposition (PECVD); silicon carbide; silicon nitride; wear
Hard, wear-resistant Si-C-N coatings were produced via a thermal plasma chemical vapor deposition process in a triple torch reactor. Vaporized hexamethyldisilazane (HMDSN) and nitrogen and/or hydrogen gases were dissociated through the argon plasma as additional reactants. Several Si-C-N coatings were synthesized with varying reactant flows and substrate temperature. Film composition, morphology, and mechanical performance were examined. Hardness and elastic modulus increased with decreasing N:H gas ratio, decreasing roughness, and the inclusion of nanocrystallites. A kinetic reaction mechanism determined that the atomic species primarily existed in the substrate boundary layer. The Damkohler number was calculated to predict the necessary reactant composition for morphologically smooth films.
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