Abstract
This work evaluates HVOF sprayed cermet coatings as an alternative to galvanic hard chrome plating for applications requiring corrosion and wear protection. WC-10Co-4Cr layers were deposited on different types of steel using commercially available HVOF systems. The coatings were then assessed based on their friction, wear, adhesion, and corrosion behaviors, which are shown to compare favorably with those achieved using a commercial hard chrome plating system. The paper also sheds light on how salt spray attacks protective surface layers at the edges, causing corrosion that propagates along the interface with the substrate. When coating edges were protected, exposure to salt spray atmospheres did not jeopardize the bond strength of any (cermet or chrome) coating tested. Paper includes a German-language abstract.
