THE INFLUENCE OF SURFACE GEOMETRICAL STRUCTURE OF STEEL ON THE STATIC FRICTION COEFFICIENT OF POLYMER MATERIALS
Journal Title: Tribologia - Year 2009, Vol 227, Issue 5
Abstract
A high static friction coefficient means that the static friction resistance plays an important role in the energy consumption during the start-up period. The minimisation of static frictional resistance is an important issue in polymer-metal sliding couples operating under dry friction conditions. There have been four typical polymer sliding materials chosen: − polyamide (PA 6), − polyoxymethylene (POM), − polytetrafluoroethylene (PTFE), and − composite based on PTFE (PTFE + 40 weight % of bronze powder). Depending on the variant of surface roughness and the texture direction of steel counterface, differences in the static friction of polymer material can be observed. Test results show the significant influence of surface geometrical structure (roughness, texture direction) of the steel counterface on the value of the static friction coefficient of polymer materials sliding against steel.<br/><br/>
Authors and Affiliations
Wojciech Wieleba
Keywords
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