With cold gas spraying, the particles of the spray powder are accelerated to speeds of over 500 m/s in a preheated gas jet. Due to the relatively low temperatures, the spray material does not melt in the gas jet, and the thermal load on the substrate is also low. This paper provides an overview of the state of the art of the system as well as layers and their properties. It shows a few examples of the applicability of the cold gas spray process. Various metals such as aluminum, copper, zinc, steel, nickel alloys, titanium, and niobium as well as powder mixtures and polymer powders have been sprayed onto a wide variety of substrate materials. The layers are examined metallographically and characterized. Possible applications are discussed on the basis of these results. Paper includes a German-language abstract.

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