Back to Search Start Over

Influence of the Morphology of Eutectoid Steels on Corrosion Resistance in NaCl Aqueous Medium with and without CO 2.

Authors :
Fideles, Francisco Felipe de M.
Florez, Mauro Andres C.
Rodrigues, Maria Veronica G.
Cardoso, Jorge Luiz
Aranas Jr., Clodualdo
Rodrigues, Samuel F.
Lima, Marcos Natan da S.
Pascoal, Caio Victor P.
de Moura, Thiago Alves
Reis, Gedeon S.
Silva, Eden S.
de Abreu, Hamilton F. Gomes
Source :
Metals (2075-4701); Oct2023, Vol. 13 Issue 10, p1782, 14p
Publication Year :
2023

Abstract

This study conducts a comparative electrochemical evaluation of three types of pearlitic steels used in flexible pipelines for oil transport in marine environments. The steels have been manufactured with chemical composition and geometry variations to optimize operation performance under adverse conditions. Electrochemical tests were conducted using solutions simulating marine environments with NaCl and CO<subscript>2</subscript>, and at high temperatures. The results indicated that spheroidized (SC) steel demonstrated the best corrosion resistance under these specific conditions. Additionally, the Raman spectroscopy characterization technique was used to analyze the layers of corrosion products formed during the tests, identifying the presence of FeCO<subscript>3</subscript> (siderite) and other corrosive oxides. These discoveries are valuable for selecting and improving materials in flexible pipelines used in oil production in marine waters. The study highlights the importance of the cementite morphology present in pearlite as a relevant factor in the corrosive behavior of steels, contributing to the development of more efficient and durable solutions for the offshore oil and gas industry. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20754701
Volume :
13
Issue :
10
Database :
Complementary Index
Journal :
Metals (2075-4701)
Publication Type :
Academic Journal
Accession number :
173315683
Full Text :
https://doi.org/10.3390/met13101782