Study on imidazoline based inhibitor on A106 Grade B through electrochemical impedance spectroscopy

Yuli Setyawan, Rini Riastuti

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Corrosion caused by carbon dioxide (CO2) on carbon steel pipes and oil and gas processing-equipment is common. Water-soluble CO2 produces carbonic acid (H2CO3) which has more corrosive properties than hydrochloric acid (HCL) at the same pH. Electrochemical impedance spectroscopy and linear polarization resistance were employed to determine the processes occurring during the adsorbed inhibition process on the metal surface. Imidazoline based inhibitor concentration variations helped uncover the ability of inhibitor inhibition and the passivation strength of the formed layer. This research was conducted on A106 Grade. B carbon steel in an environment of 3 % NaCl. The imidazoline based inhibitor concentration varies from 0 to 40?ppm at 40 ?. At a temperature of 40 ? and without inhibitor, the corrosion rate showed 143.6 MPY, but dropped drastically to 22.4 MPY when 5?ppm inhibitor was added. Electrochemical Impedance Spectroscopy was applied to study the inhibition mechanism. It was found that based on an adsorption isotherm analysis, chemisorption happened between inhibitor and metal.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
Subtitle of host publicationExploring New Innovation in Metallurgy and Materials
EditorsNono Darsono, Yudi Nugraha Thaha, Aga Ridhova, Ahmad Rhamdani, Muhammad Satrio Utomo, Faried Miftahur Ridlo, Mukhlis Agung Prasetyo
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419919
DOIs
Publication statusPublished - 21 Apr 2020
Event3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019 - Tangerang Selatan, Indonesia
Duration: 23 Oct 201924 Oct 2019

Publication series

NameAIP Conference Proceedings
Volume2232
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
Country/TerritoryIndonesia
CityTangerang Selatan
Period23/10/1924/10/19

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