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Title: Influence of a layer of undissolved cementite on the rate of the CO{sub 2} corrosion of carbon steel

Abstract

Theoretical models describing the influence of transport phenomena on the protectiveness of corrosion layers are briefly recalled, together with the impossibility of using the standard electrochemical techniques of imposed polarization, such as the plotting of potential-current density curves, in the case of specimens covered by such layers. This has led to the idea of using ``pseudo-polarization`` curves, which simply correspond to the trajectory of the free corrosion point in the traditional Tafel representation. This method suggests that the increase in corrosion rate beneath a layer of undissolved cementite is in fact caused by local acidification of the corrosive medium in the layer, due to exhaustion of the bicarbonate anions which buffer the external medium.

Authors:
 [1];  [2];  [3]
  1. Elf Equitaine, Pau (France)
  2. Statoil Research Center, Trondheim (Norway)
  3. Inst. for Energiteknikk, Kjeller (Norway)
Publication Date:
OSTI Identifier:
70020
Report Number(s):
CONF-940222-
TRN: IM9529%%359
Resource Type:
Book
Resource Relation:
Conference: Corrosion 94: National Association of Corrosion Engineers (NACE) international annual conference, Baltimore, MD (United States), 28 Feb - 4 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Corrosion/94 conference papers; PB: 5005 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 02 PETROLEUM; CARBON STEELS; CORROSION; CARBON DIOXIDE; CORROSIVE EFFECTS; CEMENTITE; CATALYTIC EFFECTS; PROTECTIVE COATINGS; OIL WELLS; FIELD PRODUCTION EQUIPMENT; RESERVOIR FLUIDS; DISSOLUTION; FERRITE; MARTENSITE; CARBONATES; CHEMICAL REACTION KINETICS; EXPERIMENTAL DATA

Citation Formats

Crolet, J L, Olsen, S, and Wilhelmsen, W. Influence of a layer of undissolved cementite on the rate of the CO{sub 2} corrosion of carbon steel. United States: N. p., 1994. Web.
Crolet, J L, Olsen, S, & Wilhelmsen, W. Influence of a layer of undissolved cementite on the rate of the CO{sub 2} corrosion of carbon steel. United States.
Crolet, J L, Olsen, S, and Wilhelmsen, W. 1994. "Influence of a layer of undissolved cementite on the rate of the CO{sub 2} corrosion of carbon steel". United States.
@article{osti_70020,
title = {Influence of a layer of undissolved cementite on the rate of the CO{sub 2} corrosion of carbon steel},
author = {Crolet, J L and Olsen, S and Wilhelmsen, W},
abstractNote = {Theoretical models describing the influence of transport phenomena on the protectiveness of corrosion layers are briefly recalled, together with the impossibility of using the standard electrochemical techniques of imposed polarization, such as the plotting of potential-current density curves, in the case of specimens covered by such layers. This has led to the idea of using ``pseudo-polarization`` curves, which simply correspond to the trajectory of the free corrosion point in the traditional Tafel representation. This method suggests that the increase in corrosion rate beneath a layer of undissolved cementite is in fact caused by local acidification of the corrosive medium in the layer, due to exhaustion of the bicarbonate anions which buffer the external medium.},
doi = {},
url = {https://www.osti.gov/biblio/70020}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}

Book:
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