✦ LIBER ✦

Effect of cathodic pretreatment on the passivation of iron in neutral solution

✍ Scribed by A. Rauscher; H. Konno; M. Nagayama

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 390 KB
Volume: 22
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(77)80004-2

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✦ Synopsis

Abstrac(-Pure iron specimens anodically oxidized at +600 mV (us see) for one minute were partially reduced with a cathodic current of lOpA/crn" and then reoxidized at the same potential for one hour. The experiment was performed in a boric acid/borate buffer solution at pH = 8.43 at room temperature. Variation in the thickness of the oxide film during the experiment is discussed for an inner Fe,04 and outer y-Fe203 layers, with emphasis on the effect of cathodic treatment. In the discussion, the amounts of charges for anodic and cathodic processes and the amount of dissolved Fe*+ ions during cathodic reduction are utilized.

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