Corrosion and Wear Resistance of WC Based Coatings with High Alloy Binders

This paper examines WC based coatings with high-alloy binders with regard to their structure, corrosion behavior and wear. The coatings are compared to conventional coatings with respect to corrosion and wear. The coatings were made using HVOF spraying of various powders. All powders examined were produced by agglomeration/sintering, that is by agglomeration of metal particles with WC particles and subsequent sintering. Some powders have been made using pre-alloyed metal particles. The paper also examines a mixture of ceramic-metallic powder and purely metallic powder. Various methods are used to characterize the powders and coatings. Paper includes a German-language abstract.