Study on Coating Mechanism and Properties of Die CrN+DLC Layer

Abstract:

This paper introduces the principle of PACVD coating technology, technical characteristics, equipment composition and material characteristics of CrN+DLC. Taking H13 steel as the research object, its surface was treated with CrN+DLC. The microstructure, bonding state and hardness of the interface were studied by means of metallography, SEM, hardness and component distribution of the surface layer. The anti-crack ability and grade of DLC layer were analyzed by studying the shape of crack distribution with Rockwell hardness indentation, and the high quality layer with crack grade of HF1 was obtained. With the dual properties of diamond and graphite of DLC, it can make the die surface have lower friction coefficient, higher hardness, higher impact toughness, better solid lubrication performance and higher corrosion resistance. Surface DLC coating technology provides a new solution to improve the performance of the die.

• Periodical: Key Engineering Materials (Volume 905)
• Pages: 22-29
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.905.22
• Online since: January 2022
• Authors: Li Jun Han*, Qing Wen Wu, Xue Song Wu, Ze Zhang, Hai Sheng Ma
• Keywords: CrN+DLC Layer, H13 Steel, Microstructure, PACVD Technology, Property, Surface Hardness

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