The Construction, Preparation and Characterization of VC Coating
DOI:
https://doi.org/10.62051/ijmee.v8n1.14Keywords:
VC Coating, Green Dry Cutting Technology, Crystal Structure, Preparation Methods, Performance CharacterizationAbstract
With the increasing attention of human to resource conservation and environmental protection, green dry cutting technology has been widely concerned. In the dry cutting process, if the protective coating with self-lubricating function is applied on the surface of the tool, the coefficient of friction can be reduced, the cutting heat can be reduced, the temperature of the cutting zone can be effectively reduced, the anti-wear and high-temperature resistance of the tool can be enhanced, the tool chipping can be inhibited, the service life can be prolonged, the processing efficiency can also be improved, and the surface processing quality of the workpiece can be improved. However, for high-hardness coatings, as the temperature rises, the tool will often appear to adhere to oxidation, which requires the use of the coating itself to produce a lubricating effect, so as to reduce the occurrence of such situations. In addition, V reacts with oxygen during friction to form Magnéli phase oxide V2O5 with lubricating effect to achieve a friction reduction effect. In this paper, the crystal structure, commonly used preparation methods, and performance characterization of vanadium carbide (VC) coatings, a self-lubricating coating with high hardness and low friction in a wide temperature range are introduced.
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