RT info:eu-repo/semantics/article
T1 Characterization of the corrosion products formed on zinc in archipelagic subtropical environments
A1 Souto, Ricardo Manuel
A1 Santana, Juan José
A1 Fernández-Pérez, Bibliana María
A1 Morales, J.
A1 Vasconcelos, H. Cristina
A1 González, Sergio
A2 Química
A2 Grupo de Electroquímica y Corrosión
Departamento de Química
Instituto de Materiales y Nanotecnología
K1 Atmospheric corrosion
K1 Zinc
K1 Sodium chloride
K1 Carbon dioxide
K1 Sulphur dioxide
K1 X-Ray diffraction
AB 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 (Zn5(OH)8Cl2) and hydrozincite (Zn4CO3(OH)6·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 (Zn5(OH)8(NO3)2·2NH3) and zinc chlorohydroxysulfate (NaZn4Cl(OH)6SO4·6H2O), were also found though in smaller amounts.
YR 2012
FD 2012
LK http://riull.ull.es/xmlui/handle/915/19023
UL http://riull.ull.es/xmlui/handle/915/19023
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 18-nov-2024