| Abstract: |
The HVOF sprayed WC-CoCr coatings are widely spread due to their excellent resistance against wear and corrosion. These coatings are one of the most suitable alternative for hard chromium in many application. Within the research project, the most suitable hard chromium alternative for hydraulic devices in aircraft are being developed and tested. This application is highly demanding not only on functional properties of applied coatings, but also on the surface quality. Grinding and polishing of the coating is not sufficient, to achieve the necessary surface properties. In this study aims to optimize the superfinishing process of HVOF sprayed WC-CoCr coating. The achieved surface quality is primary measured by means of profilometry. With optimized surface preparation, the tested parts for aircraft hydraulic parts are treated and tested for leakage of operating fluids and high cyclic lifespan.
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