THE EFFECT OF IRRADIATION WITH AN ELECTRON BEAM ON MECHANICAL, SCLEROMETRIC, AND TRIBOLOGICAL PROPERTIES OF PTFE WITH A GRAPHITE ADDITIVE
Journal Title: Tribologia - Year 2016, Vol 267, Issue 3
Abstract
Polytetrafluoroethylene (PTFE) with a 15% graphite additive was subjected to irradiation using an electron beam of energy of 10 MeV in doses of 26, 52, 78, 104, and 156 kGy. The effect of electron beam irradiation on the mechanical, sclerometric, and tribological properties of the material was examined. It was found that the modification through irradiation entailed a gradual increase in the microhardness and Young's modulus as the absorbed dose of irradiation increased. A stereometric analysis of the scratch traces on the material allowed for the determination of the coefficients of the wear micromechanism, β, and resistance to wear, Wβ. After irradiation (especially with a dose of 104 kGy), a significant quantity of the material showed traces of ploughing; the value of the wear resistance coefficient Wβ for the PTFE subjected to cross-linking also increased considerably, which indicated a significant reduction of the tribological wear in relation to the initial material. Examination of abrasive wear of PTFE was performed for the polymer in its initial state and after modification through radiation on a pin-on-disc test stand, T-01. The tests have shown more than a five times reduction of the linear wear during the interaction with a titanium counter-specimen.<br/><br/>
Authors and Affiliations
Adrian BARYLSKI, Sławomir KAPTACZ, Krzysztof ANIOŁEK, Marian KUPKA
Keywords
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- EP ID EP246203
- DOI 10.5604/01.3001.0010.7290
- Views 56
- Downloads 0
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