Electrochemical behavior of thermally sprayed stainless steel coatings in 3.4% NaCl solution

Suegama, P. H.; Fugivara, C. S.; Benedetti, A. V.; Fernández, J.; Delgado, J.; Guilemany, J. M.

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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrochemical behavior of thermally sprayed stainless steel coatings in 3.4% NaCl solution

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Author(s):	Suegama, P. H. ^[1] ; Fugivara, C. S. ; Benedetti, A. V. ; Fernández, J. ; Delgado, J. ; Guilemany, J. M. Total Authors: 6
Affiliation:	^[1] Universidade Estadual Paulista (UNESP). Campus de Araraquara. Instituto de Química. Departamento de Físico-Química - Brasil Total Affiliations: 6
Document type:	Journal article
Source:	Corrosion Science; v. 47, n. 3, p. 605-620, Mar. 2005.
Field of knowledge:	Physical Sciences and Mathematics - Chemistry
Abstract
Four types of stainless steel coatings prepared by a high velocity oxy-fuel spraying system (HVOF) were studied. Differences among coated steels were related to the spraying parameters, which influenced the behavior of the samples against the corrosion. The electrochemical behavior of the stainless steel coatings was strongly influenced by porosity, the presence of micro- and macro-cracks, and also of un-melted particles. Once the electrolyte reached the steel substrate via these defects, the galvanic pair formed between the coating and substrate-accelerated corrosion, leading to the depletion of the coating. (AU)

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