Abstract

The general aim of this paper is to determine the sliding wear by comparing cermet layers in the sprayed and hot isostatically pressed (HIPed) condition. WC-12Co layers are applied to a steel substrate containing SUJ-2 using High Velocity Oxy-Fuel syringes and pressed hot isostatically using the coating technique. A high-frequency exchange device is used to test the sliding wear behavior of these layers under dry and lubricating friction under a steel and ceramic arrangement. The results are discussed on the basis of SEM observations, wear behavior, X-ray diffraction findings, microstructure examinations, micro-hardness determinations, and fracture toughness. The results indicate that the HIP technique can be used successfully to significantly improve the properties of thermally sprayed layers by post-treating them. Paper includes a German-language abstract.

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