Abstract
Phase transition of CNx coatings by sliding against a Si3N4 ball has been studied by Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) to understand this super-low friction phenomena in N2. A pin-on-disk type tribometer was constructed to determine the tribological properties of this coating when sliding against a Si3N4 ball in N2. The analytical results by AES and XPS showed that the nitrogen atoms desorbed from the top layers of the coating, and that the layers changed to a graphite-like structure without nitrogen during a friction coefficient decrease to lower than 0.01. The structural transition of CNx is discussed in this paper.
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The authors thank Professor Koji Kato of Tohoku University for using IBAD equipment.
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Tokoroyama, T., Goto, M., Umehara, N. et al. Effect of nitrogen atoms desorption on the friction of the CNx coating against Si3N4 ball in nitrogen gas. Tribol Lett 22, 215–220 (2006). https://doi.org/10.1007/s11249-006-9084-x
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DOI: https://doi.org/10.1007/s11249-006-9084-x