AN INFLUENCE OF MOLYBDENUM DISULFIDE CONTENT IN ELECTROLYTE ON TRIBOLOGICAL PROPERTIES OF ANODIC OXIDE COATINGS

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AN INFLUENCE OF MOLYBDENUM DISULFIDE CONTENT IN ELECTROLYTE ON TRIBOLOGICAL PROPERTIES OF ANODIC OXIDE COATINGS

Journal Title: Tribologia - Year 2010, Vol 231, Issue 3

Abstract

The paper presents an estimation of the usefulness modification of anodic oxide coatings (AHC) on aluminium alloys with molybdenum disulfide (MoS2) for the improvement of the tribological properties of Al2O3 coatings. Anodic oxide coatings were produced through hard anodising on the EN AW-5251 aluminium alloy in a multi- -component electrolyte modified with molybdenum disulfide powder with a grain size below 20 micrometers (concentration of MoS2 powder in electrolyte: 0–80 g/l). Tribological tests of modified AHC were conducted in a surface-surface couple in reciprocating motion at the T-17 research stand simulating the conditions of piston/sealing contact of lubricant-free pneumatic servo-motors. The obtained results indicate a significant reduction of the friction coefficient of a sliding couple consisting of a polymer (PEEK/BG material) and an anodic oxide coating, as well as a reduction of wear of the polymer tribopartner as a result of the modification of the oxide coating with MoS2 (especially in the presence 60 g/l of MoS2 powder in electrolyte). The effect of the modification of anodic oxide coatings with molybdenum disulfide is also a significant reduction of the time of wearing-in of the tested couple.<br/><br/>

Authors and Affiliations

Tomasz Kmita, Władysław Skoneczny

Keywords

POSSIBILITIES OF APPLICATION OF NEW MATERIALS FOR CHAIN DRUMS OF ARMOURED FACE CONVEYORS WITH AN INCREASED WEAR RESISTANCE

The primary purpose of this study was to carry out comparative research concerning the wear properties of materials used for chain drums, both of domestic and foreign production, as well as of ADI cast iron, which was co...

EP ID EP517311
DOI -
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