Optimum Me-DLC coatings and hard coatings for tribological performance[Diamond-Like Carbon]

Journal Article · Tue Feb 01 04:00:00 EST 2000 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1361/105994900770346268· OSTI ID:20023159

Su, Y L; Kao, W H

In this study, hard coatings (TiN, TiCN, CrN, and CrCN) and Me-DLC coatings (Ti{sub x%}-C:H and Cr{sub x%}-C:H) were deposited on tungsten carbide (WC) substrate by multiarc physical vapor deposition (MAPVD) and unbalanced magnetron (UBM) sputtering, respectively. Counterbodies of the AISI 1045 steel cylinder and the AA7075T65l aluminum cylinder were used in the cylinder-on-disk, line-contact wear mode under dry condition; a counterbody of the AISI 51200 steel ball was used in the ball-on-disk, point-contact wear mode, under both dry and lubricated conditions. All wear tests were conducted with a reciprocating machine. After the tests, the most suitable coating for various counterbodies and test environments was selected. For the coating/1045 steel cylinder, the Ti{sub 10%}-C:H coating possesses excellent tribological characteristics. For the coating/7075T651 aluminum cylinder, hard coatings display excellent wear resistance. For the coating/steel ball, CrCN and CrN coatings display very little wear under both dry and lubricated conditions. On TiN and TiCN coatings, special wear mechanisms of material transfer, adhesion wear, and fatigue fracture occurred during initial tests under kerosene lubrication.

• Research Organization: National Cheng Kung Univ., Tainan (TW)
• OSTI ID: 20023159
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 1 Vol. 9; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
CARBIDES
CHROMIUM COMPOUNDS
DIAMONDS
NITRIDES
PROTECTIVE COATINGS
SLIDING FRICTION
STEELS
SURFACE COATING
TITANIUM COMPOUNDS
WEAR RESISTANCE