method for a metal einzelteiles fitted with a thermally black surface and its use

摘要

it is possible to have a metal from the group of molybdenum, nickel, iron, tungsten and copper, or an alloy comprising at least one metal from the group contains, at a high temperature is very stable thermally black for heat radiation).this can be done by giving the metal or alloy with a 1 m thick aluminum layers coated by some is that the coated metal or alloy in a non reactive atmosphere is heated until the aluminum with a metal or a metal from the legieru ng has responded as the metal or alloy in wet hydrogen ausgeheizt,thereby the aluminum from the connection of the aluminum with the metal or alloy is partially oxidized. in this way, a high temperature stable thermally black surface.