Enhancing the Durability and Surface Properties of Ceramic-Glass via DLC Coating Method

The purpose of this study was to investigate how diamond-like carbon (DLC) coatings could improve ceramic-glass durability and surface property. Ceramic-glass is valued for its aesthetic appeal. However, it is brittle and easily damaged. To address this issue, we looked into the use of DLC coatings known for their high hardness and low friction properties. Starting with cleaning the surface with linear ion guns to remove any impurities, a buffer layer was applied to enhance the adhesion of coatings. The DLC layer was deposited using unbalanced magnetron (UBM) sputtering, which maximized the deposition efficiency by controlling magnetic fields. Results demonstrated a significant improvement in mechanical properties of ceramic glass, with DLC-coated surfaces achieved a friction coefficient close to zero, a surface hardness of 22 GPa, and an adhesion strength exceeding 30 N. These findings confirm that DLC coatings can substantially increase the durability and extend the service life of ceramic glass, making them a promising solution for enhancing performances of high-cost brittle materials.