| abstract |
A method for coating a workpiece by cold gas spraying is carried out using a cold gas spray nozzle which generates a particle jet that is directed onto the surface. Additional energy is introduced into the layer that is being formed by way of an electromagnetic energy source, e.g. a laser, which the energy introduced into the particles by the cold gas spray nozzle also contributes to forming the layer. The cold spraying process can be used flexibly as a result of the additional activation by way of electromagnetic radiation. Moreover, layers having a complicated structure, e.g. strip conductors, can be created with the aid of the laser without further processing. A coating unit includes a generator for electromagnetic radiation in addition to the cold gas spray nozzle and is therefore suitable for carrying out the novel method. |