Transition from polymer-like to diamond-like a-C:H films structure and mechanical properties

Mechanical and tribological characterization of nanostructured HfB2 films deposited from compound target

“…According to the theory of material wear, hardness is the main characteristic that determines the surface wear resistance [38][39][40]. To assess the resistance of materials to elastic fracture strain, the ratio of hardness to elastic modulus (H/E) [41,42] is inversely proportional to the material plasticity index, and to estimate the resistance of the material to plastic deformation the H 3 /E 2 parameter is used. In order to increase the resistance to elastic deformation of fracture and reduce plastic deformation, the material should have high hardness with low elasticity modulus [43].…”

Magnetron reactively sputtered Ti-DLC coatings on HNBR rubber: The influence of substrate bias

“…In general, metallic coatings enhance the hydrophobicity, the wear resistance and decrease the coefficient of friction (CoF) of polymers and rubbers. Aside from metals, diamond-like carbon (DLC) shows a great potential for coatings on polymers and rubbers in both aspects: gas barrier and wear protection [4][5][6][7]. However, results are scarcely reported on DLC and DLC-based coatings deposited on rubber substrates.…”

Deposition of Hydrocarbon Films by Means of Helium‐Ethylene Fed Glow Dielectric Barrier Discharges

“…Low pressure plasma enhanced chemical vapor deposition (PECVD) of hydrogenated amorphous carbon (a‐C:H) thin films has been widely studied utilizing several monomers. Polymeric coatings with well‐defined characteristics, such as hydrogen concentration and Csp 3 /Csp 2 ratio, have been deposited 8–14. Interesting results have been reported since the 70's; for instance in 1974, Kobayashi et al15,16 obtained a polymer‐like coating in ethylene fed plasmas, which presented a strong tendency to oxidize after preparation.…”