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A new corrosion mechanism for X100 pipeline steel under oil-covered chloride droplets Liang, Hongxing; Liu, Jing; Schaller, Rebecca Filardo; Asselin, Edouard

Abstract

A 0.17 mM NaCl droplet on X100 pipeline steel covered by paraffin oil is used to simulate the corrosive environment encountered in heavy oil or bitumen pipelines. The development of corrosion under the droplet was monitored and explored in two stages. In the initial stage (1 h), the distribution of corrosion pits was heterogeneous with one area under the droplet presenting a higher pit density. As the corrosion proceeded (24 h), the localized corrosion in the area under the droplet with the higher pit density switched to general corrosion, while the other region of the droplet continued to pit. The mechanisms driving this new distinctive corrosion form developed beneath an underoil salty droplet on X100 pipeline steel are explained.

Item Metadata

Title
A new corrosion mechanism for X100 pipeline steel under oil-covered chloride droplets
Creator
Liang, Hongxing; Liu, Jing; Schaller, Rebecca Filardo; Asselin, Edouard
Publisher
Allen Press
Date Issued
2018-09-01
Description
A 0.17 mM NaCl droplet on X100 pipeline steel covered by paraffin oil is used to simulate the corrosive environment encountered in heavy oil or bitumen pipelines. The development of corrosion under the droplet was monitored and explored in two stages. In the initial stage (1 h), the distribution of corrosion pits was heterogeneous with one area under the droplet presenting a higher pit density. As the corrosion proceeded (24 h), the localized corrosion in the area under the droplet with the higher pit density switched to general corrosion, while the other region of the droplet continued to pit. The mechanisms driving this new distinctive corrosion form developed beneath an underoil salty droplet on X100 pipeline steel are explained.
Subject
Steel; Pipelines; Pitting; Uniform corrosion
Genre
Article; Preprint
Type
Text
Language
eng
Date Available
2021-04-21
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0396896
URI
http://hdl.handle.net/2429/77880
Affiliation
Applied Science, Faculty of; Materials Engineering, Department of
Citation
Hongxing Liang, Jing Liu, Rebecca Filardo Schaller, Edouard Asselin; A New Corrosion Mechanism for X100 Pipeline Steel Under Oil-Covered Chloride Droplets. CORROSION 1 September 2018; 74 (9): 947–957.
Publisher DOI
10.5006/2804
Peer Review Status
Reviewed
Scholarly Level
Faculty; Graduate
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
Aggregated Source Repository
DSpace

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Attribution-NonCommercial-NoDerivatives 4.0 International