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Early stages of film growth on alpha brass immersed in ammoniacal Cu(II) solutions

, : Early stages of film growth on alpha brass immersed in ammoniacal Cu(II) solutions. Corrosion 40(5): 201-204

Films formed on 64-36 brass surfaces in a solution containing 1.0 M (NH3 + NH4+) + 0.05 M Cu(II), pH 7.25, have been analyzed after short immersion times and after mechanical scraping during immersion. The results show that the initially formed film is zinc enriched, but that the excess zinc dissolves within ~ 20 sec, leaving a zinc depleted film.


DOI: 10.5006/1.3581941

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