Method for treating aluminous components

• Main Authors: NAUMENKO, DMYTRO, QUADAKKERS, WILLEM J
• Format: Patent
• Language: English; French; German
• Published: 03.05.2006
• 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

Method for pre-oxidation of articles made from aluminum alloys or with an aluminum-containing coating comprises heating them above 1,050[deg]C to form a stable alpha-aluminum coating. An oxygen-poor atmosphere is used which at room temperature comprises either: (A) water vapor with a free oxygen content below 100 ppm; (B) a mixture of water vapor and hydrogen with a free oxygen content below that of hydrogen; or (C) a mixture of carbon dioxide and carbon monoxide with a free oxygen content below that of carbon monoxide.