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http://hdl.handle.net/10553/44561
Título: | Characterization of the corrosion products formed on zinc in archipelagic subtropical environments | Autores/as: | Santana, J. J. Fernández-Pérez, B. M. Morales, J. Vasconcelos, H. C. Souto, R. M. González, S. |
Clasificación UNESCO: | 3303 ingeniería y tecnología químicas | Palabras clave: | Atmospheric corrosion X-Ray diffraction |
Fecha de publicación: | 2012 | Publicación seriada: | International Journal of Electrochemical Science | Resumen: | The atmospheric corrosion of zinc samples exposed at 25 test sites with different climatic and pollution conditions was investigated during a two-year exposure program carried out in three of the Canary Islands (Spain) as to cover the typical range of subtropical environmental conditions. The composition and distribution of the corrosion products of zinc were analyzed qualitatively by X-ray diffraction (XRD). Simonkolleite (Zn-5(OH)(8)Cl-2) and hydrozincite (Zn4CO3(OH)(6)center dot H2O) were the corrosion products more frequently observed, revealing that chloride and carbon dioxide are the most aggressive pollutants present in the atmosphere. Sulphate-containing species, namely Zinc oxysulfate (Zn3O(SO4)(2)), Zinc hydroxysulfate (Zn4SO4(OH)(6)), Zinc diamminehydroxynitrate (Zn-5(OH)(8)(NO3)(2)center dot 2NH(3)) and zinc chlorohydroxysulfate (NaZn4Cl(OH)(6)SO4 center dot 6H(2)O), were also found though in smaller amounts. | URI: | http://hdl.handle.net/10553/44561 | ISSN: | 1452-3981 | Fuente: | International Journal Of Electrochemical Science[ISSN 1452-3981],v. 7 (12), p. 12730-12741 |
Colección: | Artículos |
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