Effect of Diamond-Like Carbon Coatings on Ball Bearing Performance in Normal, Oil-Starved, and Debris-Damaged Conditions. Issue 6 (1st November 2016)

• Record Type: Journal Article
• Authors: Mutyala, Kalyan C.; Singh, Harpal; Evans, R. D.; Doll, G. L.
• Is Part Of: Tribology transactions. Volume 59:Issue 6(2016)
• Page Start: 1039
• Page End: 1047
• Publication Date: 2016-11-01
• Subjects: PVD -- ball coatings -- metal-DLC -- oil-starved -- debris-damaged; Tribology -- Periodicals; 621
• DOI: 10.1080/10402004.2015.1131349
• Languages: English
• ISSNs: 1040-2004

Abstract

ABSTRACT: In this study, a process was developed to deposit wear-resistant metal-doped diamond-like amorphous hydrocarbon and carbon coatings onto spherical rolling elements. Nanocomposite WC/a-C:H, TiC/a-C, and Ti/a-C:H coatings were applied in a closed-field unbalanced magnetron sputtering system and their mechanical, compositional, and microstructural properties were examined. The ability of the coated spherical rolling elements to affect bearing performance in normal, oil-starved, and debris-damaged conditions was evaluated in thrust bearing tests. WC/a-C:H-coated spherical rolling elements (balls) exhibit the ability to improve bearing performance in normal, oil-starved, and debris-damaged conditions.