Monitoring and control of thermal spray processes

A method for monitoring and control of thermal spray process for coating the surface of substrates by means of high heated inorganic particles as coating agent, characterized in that during the injection process as a characteristic for the transmitted layer composition and / or the layer thickness measured a surface temperature of the substrate and in case of deviations from the desired value for control a process parameter is changed at least, which is determinative of the layer composition and / or the layer thickness.