Chemical oxidation solution composition for aluminium-alloy surface and chemical oxidation process

The invention discloses a chemical oxidation solution composition for an aluminium-alloy surface. The composition is composed of the components in the following concentrations: 18-22 g/l of chromic anhydride (CrO3), 8-12 g/l of potassium ferricyanide (K3Fe(CN)6), 3-5 ml/l of nitric acid (HNO3), 0.75...

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Bibliographische Detailangaben
Hauptverfasser:	XU JINLIN, QUE WENJUN, WU PING
Format:	Patent
Sprache:	chi ; 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 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
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Beschreibung
Zusammenfassung:	The invention discloses a chemical oxidation solution composition for an aluminium-alloy surface. The composition is composed of the components in the following concentrations: 18-22 g/l of chromic anhydride (CrO3), 8-12 g/l of potassium ferricyanide (K3Fe(CN)6), 3-5 ml/l of nitric acid (HNO3), 0.75-1.5 g/l of sodium fluoride (NaF), and 1 g/l of boric acid (H3BO3). The invention discloses a process method for performing chemical oxidation treatment on an aluminium-alloy surface by adopting an oxidation solution composition in a chemical oxidation process, wherein the method is good in the effect of the chemical oxidation treatment for the aluminium-alloy surface; the quality of the formed chemical oxidation film achieves standard requirements; and the aluminium-alloy oxidation film layer treated by the chemical oxidation process is suitable for chemical oxidation for the welding joint parts of large components.