Thermal Barrier Coatings (TBCs) are commonly used in aeronautics for both thermal and corrosion resistance. The PlazJet is a high power plasma torch designed by TAFA. Optimization of plasma sprayed coatings needs to realize a lot of experiments considering the large number of process parameters, so systematic experimentation becomes very long and expensive. Optimization methods such as the Taguchi methodology have been commonly used in the Thermal Spray industry. This paper presents an optimization of TBC sprayed by PlazJet according to the Taguchi method. It discusses coating properties such as application efficiency, thickness, density, surface shape, and adhesion in order to correlate these with variations in the process parameters. The paper also presents optimized parameters for this special application. Paper includes a German-language abstract.