Abstract
Different PVD processes – magnetron sputtering, ion beam sputtering and vacuum arc deposition – are used to produce novel corrosion resistant Mg alloys with the average energy per deposited atom increasing from 5–10 to 15–45eV. Correspondingly, a transition from a 3-dimensional columnar growth regime towards a layer-by-layer growth at increased energies was observed with the film texture changing from a weak basal texture towards a highly oriented film with the c-axis normal to the surface. Additionally, a higher energy helped stabilizing supersaturation, especially for Mg–Ti alloys. However, only a weak influence of the morphology on the corrosion rates was observed, which were mainly governed by the chemical composition of the films.
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