Journal
TRIBOLOGY INTERNATIONAL
Volume 44, Issue 11, Pages 1289-1295Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2010.07.005
Keywords
DLC; Coating thickness; Rollers; Spur gear
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Diamond-like-carbon (DLC) coating of thickness 3 and 10 mu M were developed with and without radical nitriding pretreatment on steel rollers and spur gear pair. The friction coefficient and wear amount were evaluated under sliding rolling contact condition in vacuum and under oil lubrication. Delamination of coatings was observed at the interface of the substrate. The wear resistance of coatings improved with the thickness of the coating. In vacuum both the roller and the gear pair of 10 mu m coating thickness with radical nitriding showed identical wear behavior. The radical nitriding seemed to enhance the life of DLC coatings. (C) 2010 Elsevier Ltd. All rights reserved.
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