Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
권호 표지

A Study on the Friction and Wear Characteristics of C-N Coated Spur Gear

C-N 코팅 스퍼기어의 마찰${\cdot}$마모 특성에 관한 연구

  • Lu Long (The State Key Laboratory on Mechanical Transmission, Chongqing Univ., China) ;
  • Lyu Sung-ki (School of Mechanical & Aerospace Eng., ReCAPT Gyeongsang Nati. Univ.)
  • 노용 (중국 중경대학 기계전동국가중점실험실, 중국 연변대학) ;
  • 류성기 (경상대학교 기계항공공학부, 항공기부품기술연구소)
  • Published : 2004.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study deals with the friction and wear characteristics of C-N coated spur gear. The PSII apparatus was built and a SCM415 test piece and test gear with steel substrate was treated with carbon nitrogen by this apparatus. The composition and structure of the surface layer were analyzed and compared with that of PVD coated TiN layer. It was found that both of friction coefficients of C-N coating and TiN coaling decreased with increasing load, however, C-N coating showed relatively lower friction coefficient than that of TiN coating. We was investigated the effect of C-N coating on hardness, friction and wear. The TiN coated gear showed more serious friction phenomena than that of C-N coated gear. It was considered that coating of TiN, which was conducted at a vacuum chamber at about $500^{\circ}C$ results in a tempering of base material that causes microstructure change, which in turn resulted in decreasing of hardness. The C-N coated gear and pinion had higher wear resistance that of TiN coated gear and pinion. C-N coating significantly improved the friction and wear resistance of the gear.

Keywords