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Coatings 2017, 7(8), 129; doi:10.3390/coatings7080129

The Use of Triboemission Imaging and Charge Measurements to Study DLC Coating Failure

1
Tribology Group, Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK
2
Institut P’, CNRS, Université de Poitiers, ISAE-ENSMA, F-86962 Futuroscope Chasseneuil, France
*
Authors to whom correspondence should be addressed.
Received: 26 July 2017 / Revised: 16 August 2017 / Accepted: 17 August 2017 / Published: 20 August 2017
(This article belongs to the Special Issue Manufacturing and Surface Engineering)
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Abstract

We present a study on the simultaneous evolution of the electron emission and surface charge accumulation that occurs during scratching tests in order to monitor coating failure. Steel discs coated with a diamond-like-carbon (DLC) film were scratched in both vacuum (~10−5 Torr) and atmospheric conditions, with electron emission and surface charge being measured by a system of microchannel plates and an electrometer, respectively. The results highlight a positive correlation between emission intensity values, surface charge measurements and surface damage topography, suggesting the effective use of these techniques to monitor coating wear in real time. View Full-Text
Keywords: triboemission; tribocharging; coating-failure; wear; diamond-like-carbon triboemission; tribocharging; coating-failure; wear; diamond-like-carbon
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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    Doi: 10.1016/j.wear.2017.01.013
    Description: Electron emission from alumina specimen

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Ciniero, A.; Le Rouzic, J.; Reddyhoff, T. The Use of Triboemission Imaging and Charge Measurements to Study DLC Coating Failure. Coatings 2017, 7, 129.

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