Protective coating tailored to a component

• Main Authors: Pillhöfer, Horst, Dautl, Thomas, Bayer, Erwin, Müller, Stefan
• Format: Patent
• Language: English; French; German
• Published: 06.05.2020
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Producing a protective layer for protecting a component against high temperatures and aggressive media, comprises forming a surface layer comprising aluminum and chromium on a surface of the component to be provided with the protective layer by (i) chromizing and (ii) alitizing. The chromizing and/or the alitizing in different regions of the component surface to be protected are carried out simultaneously but differently to obtain the protective layer having different regions.