In situ synchrotron X-ray diffraction study of the effect of microstructure and boundary layer conditions on CO2 corrosion of pipeline steels

M. Ko; B. Ingham; N. Laycock; D.e. Williams

doi:10.1016/j.corsci.2014.10.010

In situ synchrotron X-ray diffraction study of the effect of microstructure and boundary layer conditions on CO2 corrosion of pipeline steels

M. Ko
, B. Ingham
, N. Laycock
, D.e. Williams

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

454 Downloads (Pure)

Abstract

This study demonstrates that the nucleation of crystalline scales of siderite and chukanovite onto the surface of low-alloy steels under CO2 corrosion at elevated temperature is critically dependent on initial surface roughness, on microstructure-related surface roughness developed during corrosion, and on stirring in the solution. This study confirms that effects due to chromium micro-alloying in the steel are extremely important for siderite nucleation. On average, these effects dominate over the effects of microstructure. However, spatial variation of the corrosion deposit thickness indicates an interdependence between microstructure and chromium-enhanced siderite nucleation with the possibility of localised corrosion developing as a result.

Original language	English
Pages (from-to)	192-201
Journal	Corrosion Science
Volume	90
Early online date	22 Oct 2014
DOIs	https://doi.org/10.1016/j.corsci.2014.10.010
Publication status	Published - 1 Jan 2015

Keywords

A. Low alloy steel
A. Carbon steel
B. X-ray diffraction
B. Potentiostatic

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10.1016/j.corsci.2014.10.010

Laycock_In_situ_synchrotron_x_ray_diffraction_Corrosion_Science_2014
NOTICE: this is the author’s version of a work that was accepted for publication. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published as M. Ko, B. Ingham, N. Laycock, D.E. Williams, In situ synchrotron x-ray diffraction study of the effect of microstructure and boundary layer conditions on co2 corrosion of pipeline steels, Corrosion Science (2014), doi: http://dx.doi.org/10.1016/j.corsci.2014.10.010
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http://linkinghub.elsevier.com/retrieve/pii/S0010938X14004673

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title = "In situ synchrotron X-ray diffraction study of the effect of microstructure and boundary layer conditions on CO2 corrosion of pipeline steels",

abstract = "This study demonstrates that the nucleation of crystalline scales of siderite and chukanovite onto the surface of low-alloy steels under CO2 corrosion at elevated temperature is critically dependent on initial surface roughness, on microstructure-related surface roughness developed during corrosion, and on stirring in the solution. This study confirms that effects due to chromium micro-alloying in the steel are extremely important for siderite nucleation. On average, these effects dominate over the effects of microstructure. However, spatial variation of the corrosion deposit thickness indicates an interdependence between microstructure and chromium-enhanced siderite nucleation with the possibility of localised corrosion developing as a result.",

keywords = "A. Low alloy steel, A. Carbon steel, B. X-ray diffraction, B. Potentiostatic",

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T1 - In situ synchrotron X-ray diffraction study of the effect of microstructure and boundary layer conditions on CO2 corrosion of pipeline steels

AU - Ko, M.

AU - Ingham, B.

AU - Laycock, N.

AU - Williams, D.e.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This study demonstrates that the nucleation of crystalline scales of siderite and chukanovite onto the surface of low-alloy steels under CO2 corrosion at elevated temperature is critically dependent on initial surface roughness, on microstructure-related surface roughness developed during corrosion, and on stirring in the solution. This study confirms that effects due to chromium micro-alloying in the steel are extremely important for siderite nucleation. On average, these effects dominate over the effects of microstructure. However, spatial variation of the corrosion deposit thickness indicates an interdependence between microstructure and chromium-enhanced siderite nucleation with the possibility of localised corrosion developing as a result.

AB - This study demonstrates that the nucleation of crystalline scales of siderite and chukanovite onto the surface of low-alloy steels under CO2 corrosion at elevated temperature is critically dependent on initial surface roughness, on microstructure-related surface roughness developed during corrosion, and on stirring in the solution. This study confirms that effects due to chromium micro-alloying in the steel are extremely important for siderite nucleation. On average, these effects dominate over the effects of microstructure. However, spatial variation of the corrosion deposit thickness indicates an interdependence between microstructure and chromium-enhanced siderite nucleation with the possibility of localised corrosion developing as a result.

KW - A. Low alloy steel

KW - A. Carbon steel

KW - B. X-ray diffraction

KW - B. Potentiostatic

U2 - 10.1016/j.corsci.2014.10.010

DO - 10.1016/j.corsci.2014.10.010

M3 - Article

SN - 0010-938X

VL - 90

SP - 192

EP - 201

JO - Corrosion Science

JF - Corrosion Science

ER -

In situ synchrotron X-ray diffraction study of the effect of microstructure and boundary layer conditions on CO2 corrosion of pipeline steels

Abstract

Keywords

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