Abstract

For corrosion protection, modified surfaces or coatings prepared by ion implantation or ion beam mixing often are not sufficient for technical long-term applications. The main problem, i.e. the shallowness of the films, can be overcome by ion-beam-assisted deposition which offers the positive effects of ion beam treatment, e.g. high adhesion, low porosity, and a low process temperature without thickness limitation. The corrosion protection behaviour of a number of coatings, e.g. boron, chromium and their nitrides, chromium oxide, silicon, hard carbon and aluminium, are discussed. The results demonstrate ion-beam-assisted deposition to be appropriate for producing adherent coatings which are well suited to long-term protection against corrosion, and partly also against tribological deterioration, even for technical rough surfaces.

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