In the present study, the tribological behavior of polyaryletherketones (PAEKs) and their composites was investigated in air and vacuum environment. Polymer matrices were filled with either glass or carbon fibers and compared with a standard bearing material containing 10% carbon fiber (CF), 10% graphite, and 10% polytetrafluoroethylene (PTFE). The samples were tested in a pin-on-disk configuration under continuous sliding against a rotating steel disk (AISI 52100) at different sliding speeds. The results indicated that the tribological performance of these materials in vacuum depends on both compositions and test conditions. At low sliding speed, a very low friction and wear coefficients were obtained while at higher speed, severe wear occurred. In particular, CF filled composites showed excessive wear that led to the ignition after opening the vacuum chamber. Experimental results are discussed by analyzing the transfer film and wear debris.
On the Sliding Wear Behavior of PAEK Composites in Vacuum Environment
Indian Institute of Technology (Banaras Hindu University),
Varanasi 221 005, India
Berlin 12203, Germany
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received June 19, 2018; final manuscript received December 4, 2018; published online January 25, 2019. Assoc. Editor: Min Zou.
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Theiler, G., Harsha, A. P., and Gradt, T. (January 25, 2019). "On the Sliding Wear Behavior of PAEK Composites in Vacuum Environment." ASME. J. Tribol. April 2019; 141(4): 044502. https://doi.org/10.1115/1.4042271
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