In situ characterization of naphthenic corrosion of API 5L X70 steel at room temperature

Author(s)

Rios, Emerson C. ; Oliveira, Aloadir L. ; Zimer, Alexsandro M. ; Freitas, Renato G. ; Matos, Roberto ; Pereira, Ernesto C. ; Mascaro, Lucia H.

• Document type: Journal article
• Source: FUEL; v. 184, p. 648-655, NOV 15 2016.
• Web of Science Citations: 5

Abstract

Different in situ coupled techniques were used to characterize the naphthenic corrosion of API 5L X70 steel at room temperature. In situ optical microscopy coupled with an electrochemical noise technique indicated a general corrosion process. In situ AFM images showed the early formation of the corrosion product with a thickness of 600 nm after 90 min of immersion. The main regions observed in the temporal evolution of FTIR spectra are evidence of the formation of an iron naphthenate film even at room temperature. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 13/26233-1 - Application of coupled electrochemical techniques to study the corrosion of pipelines steel used to transport oil
• Grantee: Emerson da Costa Rios
• Support type: Scholarships in Brazil - Post-Doctorate
• FAPESP's process: 11/19430-0 - In situ investigation of carbon steel corrosion by means of temporal series micrographs coupled with electrochemical techniques
• Grantee: Alexsandro Mendes Zimer
• Support type: Scholarships in Brazil - Post-Doctorate