Modifying ceramic tile functionality in order to improve their performance is a continuous challenge for ceramic industry. One technique emerging as an alternative in the ceramic products is the use of advanced thin coatings applied by means of chemical vapour deposition technology (CVD) which allows obtaining coatings with low friction coefficients and high hardness. The present study examines the application of a high-performance diamond-like-carbon (DLC) coating by CVD plasma enhanced (PECVD) on a glazed ceramic wall tiles, used as substrate. The mechanical and tribological properties of the uncoated and the PECVD-DLC coated tile were characterised. Dynamic indentation, wear, and scratch tests were carried out, and the surface analysis (microstructure and roughness) of the coating-substrate system was studied. The results showed that tile wear resistance, scratch resistance, and microhardness improved on applying the DLC coating. No important changes in roughness were observed in comparison with that of the original glazed tile. These properties only improved to a limited extent under very severe wear conditions.
Gilabert, J., Zumaquero, E., Machí, C., Toledo, J., & Gómez-Tena, M. P. (2015). Caracterización mecánica y tribológica de recubrimientos diamond-like carbon aplicados por la técnica deposición química de vapor sobre baldosas cerámicas. Boletin de La Sociedad Espanola de Ceramica y Vidrio, 54(5), 209–218. https://doi.org/10.1016/j.bsecv.2015.09.002