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Título : | H2SO4 corrosion of API5L-X52 pipeline steel: Thermal |
Palabras clave : | Steel corrosion Thermal difusivity |
Fecha de publicación : | 16-ene-2013 |
Editorial : | Journal de Physique IV France |
Descripción : | The effect of corrosion by H2SO4 on the values of room temperature thermal diffusivity (α) and
the microstructure of API5L-X52 pipeline steel are studied. The samples were exposed for 3, 6, 9, 12 and
15 days in a corrosive solution in an atmosphere with relative humidity of 57.16% in average and at
temperature of 23.6 °C. The α values were measured by the photoacoustic technique in a heat
transmission configuration. Our results show a decrease with the corrosion time (t), with a behavior
described by an exponentially decreasing curve. Microestructural study on the samples revealed the
appearance of irregular surfaces with corroded grain frontiers, porosity and fractures of micrometer size
as a consequence of corrosion, as well as a presence of phases mainly composed by tetra hydrated iron
and manganese sulphates. The decreasing evolution of α vs t show the activity-passivity behavior in the
corrosion process. Research article of journal indexed in ISI database Instituto Politecnico Nacional |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/10834 |
Otros identificadores : | 1155-4339 http://hdl.handle.net/123456789/342 |
Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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2005 JP IV v125 p217.pdf | 163.68 kB | Adobe PDF | Visualizar/Abrir |
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