METHOD FOR PRODUCING AN ELEMENT FOR ABSORBING SOLAR RADIATION FOR A CONCENTRATING SOLAR THERMAL POWER PLANT, ELEMENT FOR ABSORBING SOLAR RADIATION

摘要

A method for producing an element for absorbing solar radiation for a concentrating solar thermal power plant, comprising the formation of a selective coating (1) on an outer surface (2) of a steel substrate (3), the formation of the selective coating (1) comprising the following successive steps: providing a steel substrate (3) having a chromium content of between 6% and 12.5% by weight, and an aluminium content less than or equal to 0.05% by weight, - carrying out heat treatment, in such a way as to form an oxide layer (4) at the surface of the substrate (3).