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Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers

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Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers

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Título Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers
Autor Fraga, Anderson de Oliveira
Klunk, Marcos Antonio
Oliveira, Adriano Agnoletto
Furtado, Gilnei Goncalves
Knörnschild, Gerhard Hans
Dick, Luis Frederico Pinheiro
Abstract Soil corrosion of carbon steel samples buried up to hundred days close to a high voltage power transmission line tower was examined by weight loss vs. time. A higher weight loss was observed if the samples were electrically connected to the tower than if they were not. This was attributed to the influence of alternating current (AC) signals induced in the soil by the transmission line. This field study showed for the first time the influence of the AC power line on the buried structure of the tower, while other studies so far were focused only on AC corrosion of cathodically protected coated pipelines, running parallel to the transmission line. An improved method was used to measure weight loss by descaling in Clark solution. The new method substitutes discontinuous measurements, proposed in the ASTM-G1-90 standard, by in situ measurements of the weight loss during descaling, using a computer controlled microbalance.
Contido em Materials research : ibero-american journal of materials. São Carlos. Vol. 17, no. 6 (Nov./Dec. 2014), p. 1637-1643
Assunto Aço-carbono
Corrosao
Torres de linhas de transmissão
[en] AC corrosion
[en] Chemical descaling
[en] Soil corrosion
[en] Weight loss
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/117419
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