Within the scope of this work, the possibility of coating geometrically constrained motor block with the PTWA method, as well as a quantitative detection of the layer quality, was investigated. Two tests were performed using an constrained and unconstrained motor as a reference motor. Additionaly the temperature development during this process was recorded. In order to obtain a direct comparison to atmospheric plasma spraying, a motor block was additionally coated with the APS process and examined. The process has also been modeled in OpenFoam for a further investigation on the influence of the process gas. This was performed with the help of a multi-stage simulation and compared to the measurement for a plausibility study. Due to the greatly extended temperature range of this simulation, compared to the usual application areas of this software package, parts of the thermodynamic model were revised and to reduce the the computation time to a technically useful measure, the results of single simulations were also transferred to the final result. In the evaluation of the layer structure and the layer quality of both experiments, no significant difference was found in the PTWA method. Here, dense layers with a low total porosity were achieved. The use of the APS process resulted in a significantly increased porosity. In the "cohaesion strength" the PTWA process is superior, to the APS method. The desired coating length cannot be achieved with the PTWA process, however the quality of the coating was found to be uniform. The evaluation of the temperature curves showed a maximum heating of the coating area to 160 °C, after equilibrium temperature distribution in the cast part, after 430 sec the temperature falls below 100 °C. At this temperatures there is no siginificant alteration of the microstructure expected in Cu free alloys during this short period of time, however it has been reported that in alloys with copper the formation of precipitation cluster may allready initialize.