Abstract
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Complicated tribochemical reactions with the
surrounding media often occur at the prosthesis material, which
is a dominant factor causing the premature failure in revision
surgery. Graphite-like carbon (GLC) film has been proven to be
an excellent tribological adaption to water-based media, and this
work focused on the friction and wear behavior of Mo-doped GLC
(Mo-GLC)-coated poly(aryl ether ether ketone) sliding against
Al2O3 counterpart in physiological saline, simulated body fluid, and
fetal bovine serum (FBS), which mainly emphasized the interface
interactions of the prosthetic materials/lubricant. Results showed
different tribological responses of Mo-GLC/Al2O3 pairs strongly correlated with the interfacial reactions of the contacting area.
Particularly, a transfer layer was believed to be responsible for the excellent wear reduction of Mo-GLC/Al2O3 pair in FBS
medium, in which graphitic carbon and protein species were contained. The wear mechanisms are tentatively discussed according
to the morphologies and chemical compositions of the worn surfaces examined by scanning electron microscope as well as X-ray
photoelectron spectroscopy