INCREASING THE SERVICEABILITY OF FRICTION PAIRS BY APPLYING A:C:H AND A:C:H:W DLC COATINGS
Journal Title: Tribologia - Year 2010, Vol 230, Issue 2
Abstract
The paper discusses the results of structural and tribological tests conducted for a:C:H and a:C:H:W DLC coatings deposited on Co- Cr-Mo specimens using the PACVD process. The structure and morphology of the Co-Cr-Mo substrate and the DLC coating were assessed by means of a scanning electron microscope (SEM). The hardness of specimens with and without a:C:H and a:C:H:W coatings were measured under a load of 10 G applying a Matsuzawa tester (HV 0.01). The resistance of the material to tribological wear was determined by means of a T-23 microscratch tester and a T-01M ball-on-disc tester (the Al2O3 ball and the Co-Cr-Mo disc with DLC coatings) under dry friction conditions and using Ringer’s solution. The friction tests were conducted by employing a T-23 microtribometer under dry friction conditions and a T-17 pin-onplate tester under lubricated friction conditions and using Ringer’s solution. The results show that the DLC coatings increase the serviceability of the surfaces, with the a:C:H coating characterised by more stable parameters.<br/><br/>
Authors and Affiliations
Monika Madej
Keywords
Related Articles
- EP ID EP517016
- DOI -
- Views 61
- Downloads 0
A CRYSTAL CHEMICAL APPROACH IN ANTI-WEAR COATING’S DESIGN
The possibility of composing hard coatings with self-lubricating features is one of the most important problems in tribology. The production of new coating architectures based on nanocomposite or multilayered morphologie...
THE EVALUATION OF INFLUENCE OF COG DISPLACEMENT ON WEAR, LIFETIME AND CONTACT DURABILITY OF INVOLUTE STRAIGHT-COGGED GEARS
A method of cog wear process investigation for a straight-cogged gear including displacement correction is presented. The influence of technological and constructive corrections on maximal contact stress, slide velocity,...
STRESS IN CONTACT OF TEETH GEAR WITH COATED MATERIAL
Due to the increased interest amongst tooth gear manufacturers for an adequate method of stress field controlling, this paper presents an analysis of the applicability of Hertz theory to the case of contact of the elemen...
TRIBOLOGICAL PROPERTIES OF ALUMINIUM OXIDE LAYER MODIFIED BY CARBON
The article presents the tribological and stereometric properties of aluminium oxide layers modified by carbon. The coatings were produced on EN-AW-5251 aluminium alloy substrate using a two-stage technology. The matrix...
Cryogenic treatment and PVD coatings to augment wear resistance of tool steels