<div class="csl-bib-body">
<div class="csl-entry">Son, S. H. (2019). <i>Development of methods for corrsion inhibitor selection and quality assurance in oil and gas technology</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2019.63106</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2019.63106
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/1762
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dc.description
Abweichender Titel nach Übersetzung der Verfasserin/des Verfassers
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dc.description.abstract
Corrosion of carbon steel in the oil and gas industry is a serious problem directly associated with economic loss and safety risks. As the equipment used in the industry is faced with corrosive environment, i.e. CO2 or acidic conditions, corrosion inhibitors are applied in order to have corrosion under control. Since acid such as hydrochloric acid or acetic acid is widely used for the removal of scale in the equipment, there are corrosion inhibitors specifically against acids. Electrochemical methods have been widely used with the purposes of testing and analysing corrosion inhibitors. The objective of this master thesis was to compare efficiency of various acid corrosion inhibitors under different experimental conditions using C1020 steel. The inhibition efficiency was studied by weight loss experiments and electrical impedance spectroscopy (EIS) at different temperatures and acid concentrations. Beside EIS measurements open circuit potential (OCP) measurements and potentiodynamic polarization measurements were carried out as well. OCP was the measure for the stability of the system and with polarization measurements statements about the modus of inhibitors could be made, whether they are anodic or cathodic or mixed type of inhibitors. Furthermore, scanning electron microscopy (SEM) was used to determine whether crevice corrosion has occurred, which would impact the EIS experiments and produce incorrect data. Besides comparing the efficiency of inhibitors, an adequate method to mprove the reproducibility of electrochemical impedance spectroscopy was developed. A few experimental parameters were varied in order to improve the repeatability, such as the duration of OCP measurement, stirring during the OCP measurement or the method of adding the inhibitor, either adding it directly, diluted in hydrochloric acid or in methanol.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Korrosion
de
dc.subject
Inhibitoren
de
dc.subject
Prüfverfahren
de
dc.subject
corrosion
en
dc.subject
inhibitors
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dc.subject
testing methods
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dc.title
Development of methods for corrsion inhibitor selection and quality assurance in oil and gas technology
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dc.title.alternative
Entwicklung von Methoden zur Auswahl und Qualitätssicherung von Korrosionsinhibitoren in der Öl- und Gastechnologie
de
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2019.63106
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Seo Hee Son
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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tuw.publication.orgunit
E164 - Institut für Chemische Technologien und Analytik