Abstract: A method for joining microstructured component layers and a method for manufacturing microstructure component layers and the microstructure component layer is provided. At least one multifunctional barrier coating is applied to the joining surfaces of a base material layer for the microstructured component layers. The layers are made of aluminum/aluminum alloys and/or copper/copper alloys, and/or noble steels. At least one solder/brazing coating is applied to each barrier coating. The coated base material layers comprising the component layers are stacked. The stacked component layers are joined by solder/brazing using heat. The melting temperature of the solder/brazing coating is higher after the heat joining than before same.

Abstract: Known manufacturing methods for microstructure components, in particular for microreactors, micro-heat exchangers, and micromixers, are not reliable enough to ensure that the component's pressure and corrosion resistance is high enough, that the component's tightness against fluid exiting from the component or fluid spilling over into adjacent microchannels is high enough, and that the microchannels have a sufficiently low flow resistance. In addition, known manufacturing methods are not cost-effective enough that the microstructured components can be employed in a wide variety of applications.