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Metals
Special Issues
Soil and Pitting Corrosion of Steel
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Soil and Pitting Corrosion of Steel

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Corrosion and Protection".

Deadline for manuscript submissions: closed (25 February 2022) | Viewed by 7375

Special Issue Editor

Dr. Davood Nakhaie

E-Mail Website
Guest Editor
Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Interests: corrosion; localized corrosion; passivity; modeling; microstructure/corrosion behavior of metals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

Soil and pitting corrosion of steel structures is a major problem for many industries—from oil and gas to infrastructure to utility transmission. Despite extensive studies, many aspects of soil corrosion remain unclear as soil is a complex, porous, and discontinuous environment comprised of inorganic and organic solid phases, a water-based liquid phase, air, and other gas phases, all of which present challenges for research. Similarly, several aspects of pitting corrosion are still unexplored. This Special Issue of Metals aims to cover all aspects of soil and pitting corrosion of steel, with a special interest in the following topics:

  • Pitting corrosion of additive manufactured alloys;
  • Microstructure/pitting corrosion relationship of steel;
  • Multiscale modeling for corrosion prediction;
  • Soil corrosion in pipeline and infrastructure;
  • Soil corrosion—risk assessment and mitigation;
  • Corrosion inhibitors.

Dr. Davood Nakhaie
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Non-destructive techniques for soil corrosion evaluation
  • Risk assessment methods of buried steel structure
  • Modeling of pitting corrosion
  • Atmospheric pitting corrosion of steel
  • protective coatings
  • cathodic protection.

Published Papers (3 papers)

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Research

19 pages, 5928 KiB  
Article
Predicting the External Corrosion Rate of X60 Pipeline Steel: A Mathematical Model
by Min Xu, Hongxing Liang, Yu Liu and Edouard Asselin
Metals 2021, 11(4), 583; https://doi.org/10.3390/met11040583 - 2 Apr 2021
Cited by 3 | Viewed by 2420
Abstract
The need for predicting pipeline service life and improving risk assessment relating to corrosion hazards requires establishing a correlation between the corrosion rate (CR) of pipeline steel and its coating condition, cathodic protection (CP) levels and surrounding soil conditions. This paper presents a [...] Read more.
The need for predicting pipeline service life and improving risk assessment relating to corrosion hazards requires establishing a correlation between the corrosion rate (CR) of pipeline steel and its coating condition, cathodic protection (CP) levels and surrounding soil conditions. This paper presents a systematic study of the CR of bare and coated—with and without a dent or holiday defect—X60 pipeline steel in simulated field environments. Three CP scenarios, i.e., no, optimized, and over-protection, were studied to cover a wide range of possible CP conditions that pipeline steel may encounter in the field. Two types of salt solutions (sodium chloride or sodium sulfate) with a variation of temperatures (10 °C, 40 °C, 65 °C) and pH values (2, 7, 12) were investigated to simulate different levels of soil corrosivity. A mathematical model was developed to reveal the impact of various parameters and their interactions on the CR of X60 steel. The coating condition was the most important factor. The individual effects of other factors including temperature, pH, salt composition and CP were not shown to be significant. Instead, the interactions between temperature and salt composition, and particularly the interaction between pH and CP appeared more important in determining the overall CR. Full article
(This article belongs to the Special Issue Soil and Pitting Corrosion of Steel)
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13 pages, 2567 KiB  
Article
Decrease in Pitting Corrosion Resistance of Extra-High-Purity Type 316 Stainless-Steel by Cu2+ in NaCl
by Takahito Aoyama, Hiroaki Ogawa, Chiaki Kato and Fumiyoshi Ueno
Metals 2021, 11(3), 511; https://doi.org/10.3390/met11030511 - 19 Mar 2021
Cited by 4 | Viewed by 2198
Abstract
The effect of Cu2+ in bulk solution on pitting corrosion resistance of extra-high-purity type 316 stainless-steel was investigated. Pitting occurred in 0.1 M NaCl-1 mM CuCl2, whereas pitting was not initiated in 0.1 M NaCl. Although deposition of Cu2+ [...] Read more.
The effect of Cu2+ in bulk solution on pitting corrosion resistance of extra-high-purity type 316 stainless-steel was investigated. Pitting occurred in 0.1 M NaCl-1 mM CuCl2, whereas pitting was not initiated in 0.1 M NaCl. Although deposition of Cu2+ on the surface occurred regardless of a potential region in 0.1 M NaCl-1 mM CuCl2, Cu2+ in bulk solution had no influence on the passive film formation. The decrease in pitting corrosion resistance in 0.1 M NaCl-1 mM CuCl2 resulted from the deposited Cu or Cu compound and continuous supply of Cu2+ on the surface. Full article
(This article belongs to the Special Issue Soil and Pitting Corrosion of Steel)
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22 pages, 1148 KiB  
Article
Statistical Soil Characterization of an Underground Corroded Pipeline Using In-Line Inspections
by Rafael Amaya-Gómez, Emilio Bastidas-Arteaga, Felipe Muñoz and Mauricio Sánchez-Silva
Metals 2021, 11(2), 292; https://doi.org/10.3390/met11020292 - 8 Feb 2021
Cited by 8 | Viewed by 2040
Abstract
Underground pipelines have a space-dependent condition that arises from various soil properties surrounding the pipeline (e.g., moisture content, pH, aeration) and the efficiency of protection measures. Corrosion is one of the main threats for pipelines and is commonly monitored with in-line inspections (ILI) [...] Read more.
Underground pipelines have a space-dependent condition that arises from various soil properties surrounding the pipeline (e.g., moisture content, pH, aeration) and the efficiency of protection measures. Corrosion is one of the main threats for pipelines and is commonly monitored with in-line inspections (ILI) every 2 to 6 years. Preliminary characterizations of the surrounding soil allow pipeline operators to propose adequate protective measures to prevent any loss of containment (LOC) of the fluid being transported. This characterization usually requires detailed soil measurements, which could be unavailable or very costly. This paper implements categorical measurements of soil properties and defect depth measurements obtained from ILI to characterize the soil in the surroundings of a pipeline. This approach implements an independence test, a multiple correspondence analysis, and a clustering method with K-modes. The approach was applied to a real case study, showing that more severe defects are likely located in poorly drained soils with high acidity. Full article
(This article belongs to the Special Issue Soil and Pitting Corrosion of Steel)
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