Enhanced corrosion resistance and surface characterization of anodized 7075 Al

In this study, we aim to enhance physical and chemical properties of 7075 aluminum via anodizing. For this purpose, convenient potential, current density, time, electrolyte type and its concentration were determined. The corrosion performances of non-anodized and anodized samples have been investiga...

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Veröffentlicht in:	Protection of metals and physical chemistry of surfaces 2017-07, Vol.53 (4), p.733-742
Hauptverfasser:	Mutlu, Rasiha Nefise, Mert, Başak Doğru, Ateş, Sevgi, Gündüz, Seyran, Yazıcı, Birgül
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum base alloys Aluminum oxide Anodizing Characterization and Evaluation of Materials Chemical properties Chemistry and Materials Science Corrosion and Coatings Corrosion potential Corrosion resistance Current density Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Metallic Materials Physicochemical Problems of Materials Protection Surface properties Tribology
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Beschreibung
Zusammenfassung:	In this study, we aim to enhance physical and chemical properties of 7075 aluminum via anodizing. For this purpose, convenient potential, current density, time, electrolyte type and its concentration were determined. The corrosion performances of non-anodized and anodized samples have been investigated in 3.5% NaCl by using EIS, polarization techniques. The surface morphology was determined with SEM. As a result, additive (0.5 M C 2 H 6 O 2 + 0.08 M H 3 BO 4 + 10 –3 Al +3 ) used in 0.4 M H 2 SO 4 was improved the quality of aluminium oxide by blocking pores, increasing the thickness and decreasing the oxide formation potential. It was achieved corrosion resistance.
ISSN:	2070-2051 2070-206X
DOI:	10.1134/S2070205117040165