Special Issue "Corrosion and Electrochemical Behaviors of Metals"

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

Deadline for manuscript submissions: 30 June 2022 | Viewed by 1436

Special Issue Editor

Dr. Antonio Collazo
E-Mail Website
Guest Editor
CINTECX, ENCOMAT Group, Universidade de Vigo, 36310 Vigo, Spain
Interests: corrosion and its prevention; interface phenomena and the characterization of surfaces; coatings; surface modification at nano and micrometric scales; sol–gel; electrochemical, mechanical, and structural characterization; electrochemical impedance; advanced high-strength materials; shape-memory alloys; welding

Special Issue Information

Dear Colleagues,

In recent years, renewed interest in the study of corrosion phenomena and the development of new materials and more resistant coatings has led to significant improvements in both fundamental knowledge and engineering applications in this field.

This Special Issue covers a broad spectrum of recent scientific topics and concepts in the field of corrosion research and electrochemical behavior of metals, providing an excellent opportunity for researchers, academics, and technologists from leading universities, companies, and research centers to present their latest research at the forefront of corrosion knowledge and engineering.

Original papers and critical reviews are awaited in topics such as:

  • Electrochemical testing methods for the study of corrosion behavior of advanced engineering materials and coatings;
  • Corrosion kinetics, passivity, and localized corrosion;
  • Synthesis and characterization of new corrosion resistance materials;
  • Newest results in surface coatings and surface modifications;
  • Fundamental aspects of interfacial science;
  • Mechanisms and methods of corrosion control.

My hope is that this issue will be a valuable reference source for any researcher interested in these areas.

Dr. Antonio Collazo
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 2000 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

  • corrosion protection
  • corrosion resistant alloys
  • corrosion inhibitors
  • surface modification
  • coatings
  • sol–gel
  • electrochemical techniques
  • passivity
  • EIS

Published Papers (3 papers)

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Research

Article
Corrosion Behavior of Passivated Martensitic and Semi-Austenitic Precipitation Hardening Stainless Steel
Metals 2022, 12(6), 1033; https://doi.org/10.3390/met12061033 - 17 Jun 2022
Viewed by 258
Abstract
This research aimed to conduct a passive layer state study on martensitic and semi-austenitic precipitation hardening stainless steels (PHSS) passivated in citric acid and nitric acid baths at 49 and 70 °C for 50 and 75 min and subsequently exposed in 5 wt.% [...] Read more.
This research aimed to conduct a passive layer state study on martensitic and semi-austenitic precipitation hardening stainless steels (PHSS) passivated in citric acid and nitric acid baths at 49 and 70 °C for 50 and 75 min and subsequently exposed in 5 wt.% NaCl and 1 wt.% H2SO4 solutions. Corrosion behavior of the passivated material was observed by using potentiodynamic polarization (PP) according to the ASTM G5-11 standard. The microstructural analysis was performed by optical microscopy and scanning electron microscopy (SEM), while the passivated layer was characterized by X-ray photoelectron spectroscopy (XPS). The results indicated that the semi-austenitic-NA-50 min-70 °C sample showed the best corrosion resistance behavior in both solutions. The XPS characterization confirmed that the martensitic and semi-austenitic surface film presented a mixture of chemical compounds, such as Cr2O3 and Fe(OH)O, respectively. Full article
(This article belongs to the Special Issue Corrosion and Electrochemical Behaviors of Metals)
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Article
Inhibitory Effect of Commercial Inhibitor VCI 379/611 on the Corrosion Behaviour of HTCS-130 Tool Steel for Hot Work
Metals 2022, 12(6), 966; https://doi.org/10.3390/met12060966 - 04 Jun 2022
Viewed by 297
Abstract
This paper presents the results of a study of the influence of water and the commercial inhibitor VCI 379/611 on the corrosion behaviour of HTCS-130 hot work tool steel. Using the thermodynamic program Thermo-Calc, phase equilibria were determined according to the choice of [...] Read more.
This paper presents the results of a study of the influence of water and the commercial inhibitor VCI 379/611 on the corrosion behaviour of HTCS-130 hot work tool steel. Using the thermodynamic program Thermo-Calc, phase equilibria were determined according to the choice of calculation conditions and the known chemical composition of tool steels. From the obtained projections, it is possible to observe the secretion of individual phases at certain temperatures. To obtain insight into the corrosion resistance of steel, the following electrochemical methods were used: open circuit potential measurement; electrochemical impedance spectroscopy; and Tafel extrapolation. Metallographic tests were performed on a sample previously etched in nital to identify the microstructure of the steel. Using an optical microscope, the sample surface was analysed after each measurement. Images of the sample surface subjected to water without inhibitors indicate the occurrence of pitting corrosion. The presence of tungsten and molybdenum carbides was identified by scanning electron microscopy and energy dispersion spectroscopy. It was found that the corrosion process is more pronounced in the area of the metal base while in the areas of excreted carbides, weaker corrosion activity was observed. Full article
(This article belongs to the Special Issue Corrosion and Electrochemical Behaviors of Metals)
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Article
Corrosion Activity of Carbon Steel B450C and Low Chromium Ferritic Stainless Steel 430 in Chloride-Containing Cement Extract Solution
Metals 2022, 12(1), 150; https://doi.org/10.3390/met12010150 - 14 Jan 2022
Viewed by 456
Abstract
The carbon steel B450C and low chromium SS 430 ferritic samples were exposed for 30 days to chloride-containing (5 g L−1 NaCL) cement extract solution. The initial pH ≈ 13.88 decreased to pH ≈ 9.6, associated mainly with the consumption of OH [...] Read more.
The carbon steel B450C and low chromium SS 430 ferritic samples were exposed for 30 days to chloride-containing (5 g L−1 NaCL) cement extract solution. The initial pH ≈ 13.88 decreased to pH ≈ 9.6, associated mainly with the consumption of OH ions and the formation of γ-FeOOH, α-FeOOH, Fe3O4 and Cr(OH)3, as suggested by XRD and XPS analysis, in the presence of CaCO3 and NaCl crystals. The deep corrosion damages on B450C were observed around particles of Cu and S as local cathodes, while the first pitting events on the SS 430 surface appeared after 30 days of exposure. The change in the activity of each type of steel was provided by the potentiodynamic polarization curves (PDP). Two equivalent electrical circuits (EC) were proposed for quantitative analysis of EIS (Nyquist and Bode diagrams). The calculated polarization resistance (Rp), as an indicator of the stability of passive films, revealed that SS 430 presented relatively constant values, being two-three orders of magnitude higher than those of the carbon steel B450C. The calculated thickness (d) of the SS 430 passive layers was ≈0.5 nm and, in contrast, that of the B450C passive layers tends to disappear after 30 days. Full article
(This article belongs to the Special Issue Corrosion and Electrochemical Behaviors of Metals)
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