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Inicio  /  Coatings  /  Vol: 7 Núm: 8 Par: August (2017)  /  Artículo
ARTÍCULO
TITULO

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

Alessandra Ciniero    
Julian Le Rouzic and Tom Reddyhoff    

Resumen

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.

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