Abstract

TEJERO-RIVAS, María Candelaria; DEL ANGEL-MERAZ, Ebelia; BAUTISTA-MARGULIS, Raúl Germán  and  HERNANDEZ-MORALES, Nancy Elena. Corrosivity Index Copper and Steel at Two Locations in Villahermosa, Tabasco. Ing. invest. y tecnol. [online]. 2015, vol.16, n.2, pp.197-206. ISSN 2594-0732.

This paper presents a study of the atmospheric corrosion of copper and carbon steel made in two environments Villahermosa, Tabasco for six months. The test site of the industrial zone started Villahermosa Institute of Technology (ITVH) and rural-urban site at the Technological University of Tabasco (UTTAB). Aluminum in combination with a screw carbon steel provided the index marine corrosivity (MA), the brass screw gives the index of industrial corrosivity (IA; wire method of screw according to ASTM G116 -93 was used) and the plastic screw nylon gives the rate of rural-urban corrosivity (RUA). The determination of air pollutants (sulfur dioxide and chlorides), was with the methods of wet candle and sulfation plates according to ISO 9225. Morphology studies were performed on the corrosion products formed on the specimens screw, using scanning electron microscopy coupled with energy dispersive. The corrosion products that formed on the surface of copper and carbon steel, having a bulb-shaped morphology characteristic of the addition of soluble salts, particularly sulphates and chlorides, were identified in the two stations.

Keywords : carbon steel; copper; contaminant; corrosion.

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