SciELO - Scientific Electronic Library Online

 
vol.29 número1Avaliação de Alternativas aos Revestimentos com Alcatrão de Hulha para Estruturas de Aço Total ou Parcialmente Imersas em Estuário e Água do Mar índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Corrosão e Protecção de Materiais

versão impressa ISSN 0870-1164

Resumo

SILVA, José Maurílio da  e  BRASIL, Simone L.. Evaluation of Soil Corrosivity Criterion Based on Hydrogen Overpotential. Corros. Prot. Mater. [online]. 2010, vol.29, n.1, pp.19-25. ISSN 0870-1164.

The corrosion of buried metallic structures demands significant costs from many industrial sectors. The necessity of proper evaluation of the soil aggressiveness, for instance, requires indirect measurements that correlate the soil properties with its absolute corrosivity. In this work, physical-chemical and electrochemical parameters have been obtained for several soil samples, such as resistivity, pH, corrosion potential and hydrogen overpotential. Such measurements, including weight loss results, define an original criterion to characterize the soil corrosivity. This criterion is based on the hydrogen reduction cathodic reaction. In soils with low resistivity values, oxygen reduction can be present and, in this case, the study should be carefully analyzed.

Palavras-chave : Corrosion; Soils; Hydrogen Overpotential.

        · resumo em Português     · texto em Português     · Português ( pdf )