CORROSION RESISTANT ALUMINA LAYER ON METALLIC SUBSTRATES

A metal is coated with a corrosion resistant oxide layer, by pre-oxidation at 600 to 800 DEG C in a steam atmosphere then coating with aluminium oxide by the CVD process. A continuous, well adhering Al2O3 layer results which, in the presence of highly corrosive media and high temperatures, affords o...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HANS ZEILINGER, AUGUST MUHLRATZER, ROLAND BERTINGER
Format:	Patent
Sprache:	eng
Schlagworte:	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 COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A metal is coated with a corrosion resistant oxide layer, by pre-oxidation at 600 to 800 DEG C in a steam atmosphere then coating with aluminium oxide by the CVD process. A continuous, well adhering Al2O3 layer results which, in the presence of highly corrosive media and high temperatures, affords optimum protection of the base material which protects from permeation of foreign elements, especially hydrogen, of their isotopes, and of carbon. The method is applicable to all metallic materials.