C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
204/88
C23F 13/02 (2006.01) C23F 13/04 (2006.01)
Patent
CA 1229320
ABSTRACT OF THE DISCLOSURE An aluminum article is protected against electro- chemical corrosive attack by an aqueous medium with which the article is at least partially in contact by the steps of observ- ing the cathodic potential of said article relative to a reference electrode in contact with said medium; when the observed cathodic potential of said article approaches the potential at which corrosion of the same is initiated, electrically connecting said article directly to a source of potential electronegative with respect to the observed potential of said article to repress the cathodic potential of said article; and after said cathodic potential is significantly repressed, disconnecting the article from said electronegative potential source.
434217
Miyashita Teruo
Yoshida Koichi
Kirby Eades Gale Baker
Nippon Light Metal Company Limited
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