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 SM ISO690:2012RAJASEKARAN, S., UDAYASHANKAR, N., NAYAK, Jagannath. Effect of Heat Treatment on Pitting Corrosion Resistance of 6061 Al/SiCP Composite Coated by the Cerium Oxide Film in 3.5 N NaCl Solution. In: Surface Engineering and Applied Electrochemistry, 2011, nr. 2(47), pp. 176-180. ISSN 1068-3755. |
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  Surface Engineering and Applied Electrochemistry |
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| Numărul 2(47) / 2011 / ISSN 1068-3755 /ISSNe 1934-8002 | ||||||
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| Pag. 176-180 | ||||||
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One of the main drawbacks of 6061 Al/SiCP composite is its poor pitting corrosion resistance in the aggressive environment containing chloride ions, such as seawater, for example. The present article deals with the investigations of effects of aging on the corrosion behavior of 6061 Al/SiCP composite and of the heat treat ment on the pitting corrosion resistance of 6061 Al/SiCP composite coated by cerium oxide prepared by chemical bath technique. Potentiodynamic polarization test was used to study the corrosion behavior of cerium oxidecoatings in 3.5N NaCl solution. The microstructure of cerium oxide was examined by scanning electronmicroscopy (SEM) and the formed phases were identified by X ray diffraction (XRD). The pitting corrosionresistance of the cerium oxide coating was found to be improved after heat treatment at 300°C for 30 min.
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