Influence of the degree of polishing of alloy AA 5083 on its behaviour against localised alkaline corrosion
作者： A Aballe , M Bethencourt , F.J Botana , M Marcos , J.M Sánchez-Amaya
DOI: 10.1016/J.CORSCI.2003.10.028
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摘要: Abstract A study has been conducted of the influence surface finish on behaviour against corrosion samples alloy AA 5083 immersed in aerated solutions NaCl at 3.5%. Samples polished from 80 to 1200 grit have tested, utilising as experimental techniques, measurements weight loss, optical and scanning electron microscopy, linear polarisations electrochemical noise measurement (ENM). In conditions studied, principal process that takes place is localised alkaline (LAC). This type occurs a consequence alkalinisation area surrounding Al(Mn,Fe,Cr) cathodic precipitates exist alloy. The results obtained indicate present greater susceptibility processes than grit. It found degree polishing number intermetallic particles exposed. Hence differences observed between sets interpreted an effect function density exposed surface.
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sci-hub.se 参考文章(12)
John H. Mathews, Numerical methods for mathematics, science and engineering Prentice-Hall International. ,(1992)
Séverine Mathis, Michel Coster, Confocal Microscopy Study and Corrosion Process: the Al-(HF, HNO$_3$, HCl) System Microscopy Microanalysis Microstructures. ,vol. 7, pp. 527- 532 ,(1996) , 10.1051/MMM:1996154
M.F. Da Silva, K. Shimizu, K. Kobayashi, P. Skeldon, G.E. Thompson, G.C. Wood, On the nature of the mechanically polished aluminium surface Corrosion Science. ,vol. 37, pp. 1511- 1514 ,(1995) , 10.1016/0010-938X(95)00067-T
C. Blanc, B. Lavelle, G. Mankowski, The role of precipitates enriched with copper on the susceptibility to pitting corrosion of the 2024 aluminium alloy Corrosion Science. ,vol. 39, pp. 495- 510 ,(1997) , 10.1016/S0010-938X(97)86099-4
Zhaowei Zhong, Nguyen Phu Hung, Grinding of alumina/aluminum composites Journal of Materials Processing Technology. ,vol. 123, pp. 13- 17 ,(2002) , 10.1016/S0924-0136(02)00075-4
S.-M. Moon, S.-I. Pyun, Faradaic Reactions and Their Effects on Dissolution of the Natural Oxide Film on Pure Aluminum During Cathodic Polarization in Aqueous Solutions Corrosion. ,vol. 54, pp. 546- 552 ,(1998) , 10.5006/1.3284882
C. Blanc, G. Mankowski, Susceptibility to pitting corrosion of 6056 aluminium alloy Corrosion Science. ,vol. 39, pp. 949- 959 ,(1997) , 10.1016/S0010-938X(97)81160-2
A Aballe, M Bethencourt, F.J Botana, M.J Cano, M Marcos, Localized alkaline corrosion of alloy AA5083 in neutral 3.5% NaCl solution Corrosion Science. ,vol. 43, pp. 1657- 1674 ,(2001) , 10.1016/S0010-938X(00)00166-9
Hugh S. Isaacs, The localized breakdown and repair of passive surfaces during pitting Corrosion Science. ,vol. 29, pp. 313- 323 ,(1989) , 10.1016/0010-938X(89)90038-3
H. Werner, M. Weiland, Zum Einfluß der Oberflächenbearbeitung und der chemischen Zusammensetzung auf die Korrosion von Dental-Amalgamen Materials and Corrosion-werkstoffe Und Korrosion. ,vol. 41, pp. 210- 214 ,(1990) , 10.1002/MACO.19900410503