METHOD FOR COLORIZING ALUMINUM-CONTAINING OBJECT AND COLORIZED ALUMINUM-CONTAINING OBJECT THEREFROM
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United States of America
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Issued Date -
Nov 21, 2024
app pub date -
May 16, 2024
filing date -
May 16, 2024
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Abstract
A method for colorizing an aluminum-containing object includes the steps of: (a) subjecting the aluminum-containing object to a first pretreatment, so as to remove contaminants from a surface thereof; and (b) subjecting the pretreated aluminum-containing object obtained in step (a) to an anodizing treatment which is accomplished by applying N cycles of periodic current signals, thereby forming an aluminum oxide film with a plurality of nanopores on the surface of the aluminum-containing object. In step (b), each cycle of the periodic current signals includes a first to fourth predetermined time periods. A colorized aluminum-containing object prepared by the aforesaid method is also provided.
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