K. Richardt, F. Ernst, J. Zwick, Surface Engineering Institute, RWTH Aachen University, Aachen, Germany; K. Bobzin, Surface Engineering Institute (IOT), RWTH Aachen University, Aachen, Germany; D. Sporer, Sulzer Metco Neomet Ltd., Sonthofen, Germany; R. J. Molz, Sulzer Metco, Westbury, NY
Process optimisation and innovative material applications gain more and more interest under the aspect of continuously increasing functional and structural demands on thermal sprayed coatings. With the the Triplex generation, the atmospheric plasma spraying process was advanced by delivering enhanced plasma stability and, associated with this, a higher deposition efficiency.
The Triplex Pro 200 is the latest version of plasma spraying systems on the market and offers, due to its advanced nozzle design, distinctly higher particle velocities and ongoing with this, a lower particle oxidation and a higher coating density.
In order to increase the corrosion protection of metallic coatings, the aim of the work is a parameter study to deposit advanced corrosion resistance coatings for high temperature applications. Beside the parameter optimization the nozzle design was improved furthermore in order to optimize the coating properties.
Summary: The following paper presents research work concerning the application of functional coatings using the Triplex Pro 200 system. Due to optimized process parameters and an advanced nozzle design, especially the achievable particle velocities cause strictly denser low oxide coatings with an advanced high temperature corrosion resistance.
