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CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment

Carbon dioxide (CO2) corrosion prediction is complicated as it affects the application of carbon steel material due to possibility of high corrosion rate and the formation of protective iron carbonate (FeCO3) film layers. The formation of FeCO3 film layers is observed to reduce corrosion rate partic...

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Main Author: Mustadza, Ameirul Azraie Bin
Format: Final Year Project
Language:English
Published: UNIVERSITI TEKNOLOGI PETRONAS 2009
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://utpedia.utp.edu.my/4012/1/Dissertation_Report.pdf
http://utpedia.utp.edu.my/4012/
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spelling my-utp-utpedia.40122017-01-25T09:44:09Z http://utpedia.utp.edu.my/4012/ CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment Mustadza, Ameirul Azraie Bin TJ Mechanical engineering and machinery Carbon dioxide (CO2) corrosion prediction is complicated as it affects the application of carbon steel material due to possibility of high corrosion rate and the formation of protective iron carbonate (FeCO3) film layers. The formation of FeCO3 film layers is observed to reduce corrosion rate particularly at high temperature and high pH. Most of the FeCO3 film formation studies were done by inducing film formation through the addition of Fe2+ ions into the test solution to reach saturation condition where the product of Fe2+ and CO32- exceeds the solubility product limit and not in natural film condition. This project aims to understand the FeCO3 film formation by conducting laboratory experiment of CO2 corrosion on carbon steel in natural and induced film forming environment with Fe2+concentration (cFe2+) of 50 ppm. The study is conducted at various temperatures from 25°C to 80°C at pH 6.0, partial pressure of CO2 at 1 bar and stagnant conditions to observe how these parameters affect the CO2 corrosion rate and formation of FeCO3 film layers. Two electrochemical test techniques namely Electrochemical Impedance Spectroscopy (EIS) and Linear Polarization Resistance (LPR) are used. EIS technique shows that as the temperature increases the average corrosion rate increases while for LPR technique, the average corrosion rate increases at temperature of 25°C until 60°C before decreases at temperature of 80°C with lower average corrosion rate in induced film forming environment. It is observed that the average corrosion rate is relatively lower in induced film forming environment since the increase of Fe2+concentration results in faster formation of FeCO3 film layers. Based on the results of the corrosion tests in both conditions, it shows that for corrosion prediction work, the test is best represented by natural film forming environment. Induced film condition is only suitable for the study in relations to film initiation, growth and propagation. UNIVERSITI TEKNOLOGI PETRONAS 2009-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/4012/1/Dissertation_Report.pdf Mustadza, Ameirul Azraie Bin (2009) CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment. UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mustadza, Ameirul Azraie Bin
CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
description Carbon dioxide (CO2) corrosion prediction is complicated as it affects the application of carbon steel material due to possibility of high corrosion rate and the formation of protective iron carbonate (FeCO3) film layers. The formation of FeCO3 film layers is observed to reduce corrosion rate particularly at high temperature and high pH. Most of the FeCO3 film formation studies were done by inducing film formation through the addition of Fe2+ ions into the test solution to reach saturation condition where the product of Fe2+ and CO32- exceeds the solubility product limit and not in natural film condition. This project aims to understand the FeCO3 film formation by conducting laboratory experiment of CO2 corrosion on carbon steel in natural and induced film forming environment with Fe2+concentration (cFe2+) of 50 ppm. The study is conducted at various temperatures from 25°C to 80°C at pH 6.0, partial pressure of CO2 at 1 bar and stagnant conditions to observe how these parameters affect the CO2 corrosion rate and formation of FeCO3 film layers. Two electrochemical test techniques namely Electrochemical Impedance Spectroscopy (EIS) and Linear Polarization Resistance (LPR) are used. EIS technique shows that as the temperature increases the average corrosion rate increases while for LPR technique, the average corrosion rate increases at temperature of 25°C until 60°C before decreases at temperature of 80°C with lower average corrosion rate in induced film forming environment. It is observed that the average corrosion rate is relatively lower in induced film forming environment since the increase of Fe2+concentration results in faster formation of FeCO3 film layers. Based on the results of the corrosion tests in both conditions, it shows that for corrosion prediction work, the test is best represented by natural film forming environment. Induced film condition is only suitable for the study in relations to film initiation, growth and propagation.
format Final Year Project
author Mustadza, Ameirul Azraie Bin
author_facet Mustadza, Ameirul Azraie Bin
author_sort Mustadza, Ameirul Azraie Bin
title CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
title_short CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
title_full CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
title_fullStr CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
title_full_unstemmed CO2 Corrosion Study of Carbon Steel in Natural and Induced Film Forming Environment
title_sort co2 corrosion study of carbon steel in natural and induced film forming environment
publisher UNIVERSITI TEKNOLOGI PETRONAS
publishDate 2009
url http://utpedia.utp.edu.my/4012/1/Dissertation_Report.pdf
http://utpedia.utp.edu.my/4012/
_version_ 1739831099214790656
score 13.211869

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