influencia del tiempo de inmersiÓn en soluciÓn salina en el comportamiento electroquÍmico de la aleaciÓn comercial de aluminio aa3003h16 | influence of immersion time in saline solution on electrochemical behavior of commercial aluminum alloy aa3003h16
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2015
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Abstract
The behavior of AA3003H16 aluminum alloy was analyzed in a saline environment. The corrosion rate of the alloy at different exposure times (12 h, 1, 2, 4, 6 and 8 days) in the corrosive medium was determined by electrochemical technique of Tafel extrapolation. The corrosion damage morphology was examined by optical microscopy and scanning electron microscopy with energy dispersive X-ray microanalysis. Results show that corrosion speed of alloy AA3003H16 increased with time of exposure. Such behavior was attributed not only to the change in the natural oxide film, but also to the characteristics of the intermetallic particles and the aluminum matrix. The corrosion attack nucleated preferentially at the periphery of the intermetallic particles α-Al (FeMn) Si and β-Al (FeMn). The exposure time in the corrosive medium does not influence the morphology of the attack, showing small and large bites from the early hours of immersion in saline solution.
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| Authors | ;Solange Ysbeth Paredes-Dugarte ;Benjamin Hidalgo-Prada;Etzel Guerra;Carlos Rodríguez |
| Journal | psicologia: ciência e profissão |
| Year | 2015 |
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