FORMATION OF SACRIFICIAL ANODE LAYER ON AL MEMBER

FORMATION OF SACRIFICIAL ANODE LAYER ON AL MEMBER

PURPOSE:To improve the pitting corrosion resistance of an Al member by coating the surface of the Al member with an alloy consisting of prescribed percentages of Si, Mg, Zr and Al by hot dipping to form a sacrificial anode material. CONSTITUTION:An alloy consisting of, by weight, 6-13% Si, 0.05-3% M...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MIYAMOTO MITSUYA
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
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
FERROUS OR NON-FERROUS ALLOYS
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
METALLURGY
MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:PURPOSE:To improve the pitting corrosion resistance of an Al member by coating the surface of the Al member with an alloy consisting of prescribed percentages of Si, Mg, Zr and Al by hot dipping to form a sacrificial anode material. CONSTITUTION:An alloy consisting of, by weight, 6-13% Si, 0.05-3% Mg, 0.2- 3% Zr and the balance Al is refined. A part or the whole of the surface of the Al member is coated with the alloy by hot dipping to form a sacrificial anode material. The pitting corrosion resistance of the member is remarkably improved.