The Effect of Surface Pretreatment of Aluminum Alloy 7075-T6 on the Subsequent Inhibition by Cerium(III) Acetate in Chloride-Containing Solution
نویسندگان
چکیده
The study aimed to investigate the effect of surface pretreatment on corrosion protection aluminum alloy 7075-T6 in sodium chloride solution using cerium acetate as a inhibitor. Different pretreatments were tested: (i) mechanical grinding, (ii) grinding and non-water diamond polishing, (iii) alkaline etching with NaOH acid desmutting, (iv) cleaning commercial SurTec cleaner desmutting. Topography, composition, morphology inhibited during immersion investigated optical microscopy, 3-D profilometry, scanning electron microscopy/energy-dispersive X-ray analysis Fourier transform infrared spectrometry. properties determined by potentiodynamic measurements electrochemical impedance spectroscopy without addition acetate. A change composition was noticed function time. Appropriate treatment resulted improved against localized even after long-term up 1 month. Among pretreatments, polishing gave better results than grinding. chemical SurTec/HNO 3 more appropriate preceding step desmutting NaOH.
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ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2022
ISSN: ['0013-4651', '1945-7111']
DOI: https://doi.org/10.1149/1945-7111/ac4933