The Cobalt–Chromium–Molybdenum Alloy,2013-II
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- Category: Molybdenum knowledge
- Published on 02 July 2013
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The cobalt–chromium–molybdenum alloy was pretreated with nitric acid and O2 plasma to facilitate efficient interaction between the 4-META carboxyl group and the surface hydroxyl group on the Cr oxide passive layer of the Co–Cr–Mo alloy.
After MPC grafting, the MPC unit peaks were clearly observed in the Fourier-transform infrared spectroscopy with attenuated total reflection (FT-IR/ATR) and X-ray photoelectron spectroscopy (XPS) spectra of the Co–Cr–Mo surface.
Tribological studies with a pin-on-plate machine revealed that surface MPC grafting markedly lowered the friction coefficient. We concluded that the grafted poly(MPC) layer successfully provided high lubricity to the Co–Cr–Mo surface.
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