CONTROL OF METAL PASSIVATION IN THE TUNNEL ETCHING OF ALUMINUM.

Kurt Hebert, Richard C Alkire

Research output: Contribution to journalArticlepeer-review

Abstract

The mechanism controlling passivation of metal surface at tips of the corrosion tunnels formed on aluminum by anodic etching in hot aqueous chloride solutions was studied with transport modeling coupled with SEM and potential measurements. In the hypothesized mechanism, electrolyte diffusion in the tunnels maintained the tips of all tunnels at the repassivation potential; that is, the critical potential below which active aluminum surfaces are passivated.

Original languageEnglish (US)
Pages (from-to)320-333
Number of pages14
JournalProceedings - The Electrochemical Society
Volume86-11
StatePublished - 1986

ASJC Scopus subject areas

  • Engineering(all)

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