Affiliation:
1. South China University of Technology
2. Guangzhou Etsing Plating Research Institute
Abstract
The mainly process of electrochemical graining on 6063 aluminum alloy included graining at alternating current, anodizing and chemical coloring. The graining used NaBO2- H3BO3 system as film-forming solution, proper AC current density, treating time, temperature , adding agents and solution concentration were ascertained through operating orthogonal experiment, the grain of appropriate density and width could be obtained, the grained surface of aluminum alloy presented intergranular corrosion in the graining zone, the appearance was improved after anodizing, enough thick anodizing film could make intergranular corrosion eliminated. Cyclic voltammetry experiment was used to preliminarily explaine the grain process, the main cause of graining zone formation was hydrogen evolution.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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