Latest developments of obz innovation for cold sprayed electrically conducting coatings applied to electrically insulating ceramic coatings

The combination of electrically conducting and electrically insulating is a very interesting application for different fields of industry, e.g. the automotive industry. The challenge here is to meet different requirements: a very good electrical conductivity of the metal coating, good insulation characteristics of the ceramic coating and good binding of the complete coating system. Here especially the adhesion between ceramic and metal coating is very important. Within this talk the efforts done by obz innovation to optimize this coating system are described, among others the improvements concerning the adhesion characteristics of the metal on the ceramic coating. As thermal spray process plasma spraying or HVOF is used for the ceramic coating, the metal coating is applied by cold spraying. An important issue is the influence of the humidity of the atmosphere. Here interesting developments have been carried out to minimize these influences and to keep the coating system independent from the atmospheric humidity. As an outview interesting examples for applications are presented and the large potential of this coating system is described.