Electrochemical Corrosion Behaviour Of Antithrombogenic Amorphous Smcon Carbide Coatings

The hemocompatibility of amorphous silicon carbide films is proved by TEG measurements. The applicability of these layers for the coating of long-time implants such as artificial heart valves - requires a high chemical stability and constant electronic properties. In this paper a dynamic model, which describes the passivation of a-Sic as an equilibrium between an oxidation and a dissolution process, is derived from corrosion experiments. The experimental results prove that amorphous silicon carbide films with a low carbon content are suitable as antithrombogenic coatings for artificial heart valves.