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Metals
Special Issues
Study on Surface Modification and Corrosion Prevention of Materials
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Study on Surface Modification and Corrosion Prevention of Materials

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

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 3154

Special Issue Editors

Dr. Jiantao Qi

E-Mail Website
Guest Editor
College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
Interests: localized corrosion; surface protection film; conversion coating; functional coating; electrochemistry; Raman spectroscopy
Special Issues, Collections and Topics in MDPI journals
Dr. Wu Wei

E-Mail Website
Guest Editor
Associate Professor, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
Interests: additive manufacturing; alumium alloys; precipitation

Special Issue Information

Dear Colleagues,

Corrosion is a major issue for the increase of service life and reliability of materials, including steel, light alloys, and additive manufacturing alloys employed in the practice. In this sense, this requires a high-quality material surface modification in the industry and a delicate design of internal microstructure such as protective coating, cathodic protection methods, corrosion inhibitors, alloying design and microstructural control.

This Special Issue focuses on a new and detailed understanding of corrosion mechanisms and an improvement of corrosion performance with the support by new research methods, high-quality surface modification technologies, service life estimation methods with consideration of corrosion problems, corrosion simulation, electrochemical methods, high resolution microstructure characterization methods and others.

Dr. Jiantao Qi
Dr. Wu Wei
Guest Editors

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

  • localized corrosion
  • surface modification
  • conversion coating
  • functional coating
  • electrochemistry
  • simulation
  • alloying design
  • microstructural control

Published Papers (2 papers)

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Research

14 pages, 3567 KiB  
Article
Improved Corrosion Properties of Mg-Gd-Zn-Zr Alloy by Micro-Arc Oxidation
by Xue Geng, Qiangsheng Dong and Xiaobo Zhang
Metals 2024, 14(2), 236; https://doi.org/10.3390/met14020236 - 15 Feb 2024
Viewed by 801
Abstract
In order to improve the corrosion resistance of Mg-3Gd-1Zn-0.4Zr (GZ31K) alloys for biomedical application, the alloy was micro-arc oxidation (MAO)-treated using silicate electrolyte system under various voltages (400 V, 425 V, 450 V, 475 V). The effects of voltage on the microstructure and [...] Read more.
In order to improve the corrosion resistance of Mg-3Gd-1Zn-0.4Zr (GZ31K) alloys for biomedical application, the alloy was micro-arc oxidation (MAO)-treated using silicate electrolyte system under various voltages (400 V, 425 V, 450 V, 475 V). The effects of voltage on the microstructure and corrosion properties of MAO coating were investigated via X-ray diffraction (XRD) and a scanning electron microscope (SEM) combined with an energy-dispersive spectrometer (EDS), X-ray photoelectron spectroscope (XPS), and electrochemical experiments. The results showed that, with the increase in voltage, the MAO coatings became thicker and the micropores on the MAO coating increased in diameter. The main phase compositions of the MAO coatings were MgO and Mg2SiO4. Potentiodynamic polarization curve results showed that MAO coatings could enhance corrosion resistances, where the corrosion current density decreased by six orders of magnitude and the corrosion potential of the specimens increased by 300 mV for the voltage of 450 V in the MAO treatment; nevertheless, the corrosion resistance rapidly deteriorated due to the creation of large micropores in the MAO coating, which provide a pathway for corrosive media when the voltage is 475 V. The electrochemical impedance spectroscopy results showed that MAO treatments could increase low-frequency modulus resistance and increase the corrosion resistance of Mg alloys. In addition, MAO-treated GZ31K alloys still exhibited uniform corrosion, which is desirable for biomedical applications. Full article
(This article belongs to the Special Issue Study on Surface Modification and Corrosion Prevention of Materials)
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12 pages, 3390 KiB  
Article
Black Pine (Pinus nigra) Essential Oil as a Green Corrosion Inhibitor for Carbon Steel
by Anđela R. Simović, Branimir N. Grgur, Jelica Novaković, Peđa Janaćković and Jelena Bajat
Metals 2023, 13(3), 508; https://doi.org/10.3390/met13030508 - 2 Mar 2023
Cited by 5 | Viewed by 1469
Abstract
In this work, the essential oil of black pine (Pinus nigra J. F. Arnold) was used for the first time as a natural, ecological, and sustainable corrosion inhibitor for the acid cleaning of carbon steel. The essential oil was extracted by hydrodistillation [...] Read more.
In this work, the essential oil of black pine (Pinus nigra J. F. Arnold) was used for the first time as a natural, ecological, and sustainable corrosion inhibitor for the acid cleaning of carbon steel. The essential oil was extracted by hydrodistillation using a Clevenger-type apparatus, and the oil was analyzed by gas chromatography–flame–ionization detection (GC–FID) and gas chromatography–mass spectrometry (GC–MS). The most abundant components in the essential oil were α-pinene, germacrene D, (E)-cariophyllene, and β-pinene. The inhibition efficiency was determined by electrochemical methods (electrochemical impedance spectroscopy and potentiodynamic polarization measurements). The results showed that the inhibitory efficiency of the black pine essential oil increases with time, reaching the highest values after 4 h of immersion for all inhibitor concentrations. It was also shown that black pine essential oil is a mixed-type inhibitor. The contact angle measurements confirmed that the black pine essential oil, as a new natural, environmentally safe inhibitor, is able to protect carbon steel from corrosion in a 1 M HCl solution. Full article
(This article belongs to the Special Issue Study on Surface Modification and Corrosion Prevention of Materials)
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