Journal
TRIBOLOGY INTERNATIONAL
Volume 48, Issue -, Pages 54-62Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2011.03.025
Keywords
Friction; PTFE; Babbitt; Break-away
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This study investigates the tribological characteristics at initiation of sliding (break-away friction) of several polytetrafluoroethylene based materials. Four PTFE composites, pure PTFE, and white metal were tested in a reciprocating tribo-meter with the block on plate configuration against a steel counter-surface. Apparent contact pressure and oil temperature were varied from 1 to 8 MPa and 25 to 85 degrees C respectively. SEM investigations revealed wear patterns of the PTFE materials and the abrasive nature of hard fillers. Bronze filled, carbon filled, and pure PTFE were found to provide lower break-away friction and less variation over the course of testing and generally superior properties. (C) 2011 Elsevier Ltd. All rights reserved.
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