Guarantee on Fatigue Reliability of Multi-Layered DLC-Coating Given to CD-Carburized SCM415

Abstract:

In this research, surface modification was given to CD (Carbide Dispersion)-carburized steel used for sliding parts of vehicles, and functional evaluation was performed. It developed the DLC-coating which has multi-layered structure according to a UBMS (UnBalance-Magnetron-Sputtering) process as aims at improvement in the tribological properties in the sliding parts for vehicles. In order to maintain the adhesion with parent material (CD-carburized steel), intermediate layer that gradient hardness was generated. Structure of multi-layered part was made into ten layers. The multi-layered part consists of soft layers and hard layers. A soft layer bears high-ductility and the hard layer bears wear resistance and tribological property. Moreover, as functional evaluation of coating material, it investigated about the friction wear characteristic and influence that a DLC-coating has on the fatigue characteristic.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 193-198
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.193
• Online since: March 2006
• Authors: Masato Sato, Hideto Suzuki
• Keywords: Carbide Dispersion-Carburized, Fatigue Reliability, Multi-Layered DLC-Costing

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