Abstract
The corrosion products formed on Mg–Zr physical vapour deposited (PVD) alloys immersed in 3 wt-%NaCl solution were studied using bulk and surface characterisation techniques. The alloys showed better corrosion resistance compared to other PVD Mg alloys and exhibited some of the lowest corrosion rates ever reported for Mg alloys. Their increased corrosion resistance was attributed to the formation of corrosion products containing Zr oxide/hydroxide. The microstructures of the corrosion scale are described and a corrosion mechanism is proposed.
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