METHOD USING A LASER FOR WELDING BETWEEN TWO METALLIC MATERIALS OR FOR SINTERING OF POWDER(S), APPLICATION FOR MAKING BIPOLAR PLATES FOR PEM FUEL CELLS

摘要

The invention relates to a method for welding between two metallic materials (2, 3) or for sintering of powder(s) (P), comprising the following steps:a/ fitting a solid plate (10), transparent at the emission wavelength(s) of a laser beam (F), between said laser (L) and at least one contact zone (4) between the metallic materials to be welded or at least one sintering zone of the powder(s);b/ emission of the laser beam, through the transparent plate, to perform welding of the materials in the contact zone(s) or sintering of powder(s) in the sintering zone(s).