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Special Issue "Corrosion and Corrosion Inhibition of Metals and Their Alloys II"

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: 20 March 2024 | Viewed by 1626

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Prof. Dr. Bożena Łosiewicz

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Institute of Material Engineering, University of Silesia in Katowice, Katowice, Poland
Interests: batteries; biomaterials; corrosion and corrosion protection; electrocatalysis; electrochemistry of materials; electrochemical impedance spectroscopy; hydrogen adsorption, absorption, and electroevolution phenomena; mechanism and kinetics of electrode processes; metallic hydrides
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Dear Colleagues,

In the Age of Materials, there are many construction materials available, including metals and their alloys. The selection of the right metallic material and its proper application is an important and responsible task in every branch of technology. There are no general rules that would make it possible to choose the right material for a given application in advance. The right decision should always be based on knowledge of the characteristics of the metals and their alloys; ease of processing; availability; price; and their mechanical, physical, and chemical properties.

The corrosion of metals and their alloys strongly affects many sectors of a nation’s economy. This physicochemical interaction between a metal or alloy and its environment results in changes in the properties of the metal or alloy, which can often lead to impairment of the function of the metal or alloy, the environment, or the technical system of which these form a part. Corrosion is one of the main sources of metallic material loss. It contributes to environmental pollution and poses a threat to human health. Therefore, the goal of corrosion science and engineering with a strong interdisciplinary character is to learn the mechanisms and kinetics of the gradual destruction of metallic materials as a result of the chemical or electrochemical interaction of the corrosive environment and the maximum slowdown of the process of metal and alloy returns to a thermodynamically stable state.

This Special Issue is oriented toward all corrosion issues associated with the fundamentals of the corrosion science of metals and their alloys; corrosion protection; testing to assess corrosion resistance; data collection and analysis; and the use of corrosion data in economic and risk analysis, lifetime prediction, and decision making. Subjects of interest include the corrosion behavior of iron and low-alloy steels, corrosion-resistant steels, copper and its alloys, aluminum and its alloys, titanium and its alloys, nickel and its alloys, zinc and its alloys, and others. The development of methods to prevent and control the corrosion of metals and their alloys is also of interest.

I am pleased to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Bożena Łosiewicz
Guest Editor

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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. Materials is an international peer-reviewed open access semimonthly 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

metals
alloys
corrosion
corrosion inhibition
corrosion protection

Published Papers (3 papers)

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Research

24 pages, 7539 KiB

Open AccessArticle

Effect of Artificial Saliva Modification on Pitting Corrosion and Mechanical Properties of the Remanium^®-Type Orthodontic Archwire

Bożena Łosiewicz

Patrycja Osak

Karolina Górka-Kulikowska

and

Materials 2023, 16(20), 6791; https://doi.org/10.3390/ma16206791 - 20 Oct 2023

Viewed by 500

Abstract

The pitting corrosion of orthodontic apparatus elements in the oral environment is an interest of both clinicians and scientists dealing with the assessment of the biocompatibility of medical materials. This work presents a study on the effect of ready-to-use Listerine^® and Meridol^® mouthwashes and sodium fluoride on the resistance of the commercial Remanium^®-type orthodontic archwire to pitting corrosion in artificial saliva at 37 °C. XRD, SEM, EDS, mechanical properties, and microhardness measurements were used to characterize the archwire. The in vitro corrosion resistance of the archwire was examined using the open-circuit potential method, electrochemical impedance spectroscopy, and anodic polarization curves. The physicochemical characteristics confirmed the presence of a bi-phase alloy with a mixed austenite/ferrite structure containing Fe 74.4(7) at.%, Cr 18.4(4) at.%, and Ni 7.2(4) at.%. The Fe–Cr–Ni alloy was characterized by high tensile strength and Vickers microhardness. EIS revealed the capacitive behavior with high corrosion resistance. It was found that the kinetics of pitting corrosion in the artificial saliva decreased in the presence of NaF and mouthwashes. The potentiodynamic characteristics confirmed the decrease in susceptibility to pitting corrosion after the modification of artificial saliva. The pitting corrosion mechanism of the self-passive oxide layer on the surface of the Fe–Cr–Ni electrode in the biological environment containing chloride ions was discussed in detail. Mechanical properties after corrosion tests were weakened. Full article

(This article belongs to the Special Issue Corrosion and Corrosion Inhibition of Metals and Their Alloys II)

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16 pages, 4731 KiB

Open AccessArticle

Microstructure and Corrosion Behavior of Zinc/Hydroxyapatite Multi-Layer Coating Prepared by Combining Cold Spraying and High-Velocity Suspension Flame Spraying

and

Materials 2023, 16(20), 6782; https://doi.org/10.3390/ma16206782 - 20 Oct 2023

Viewed by 437

Abstract

The study aims to enhance the corrosion resistance and bioactivity of Mg alloy substrates through the development of a zinc/hydroxyapatite multi-layer (Zn/HA-ML) coating. The Zn/HA-ML coating was prepared by depositing a cold-sprayed (CS) Zn underlayer and a high-velocity suspension flame sprayed (HVSFS) Zn/HA multi-layer and was compared with the CS Zn coating and the Zn/HA dual-layer (Zn/HA-DL) coating. Phase, microstructure, and bonding strength were examined, respectively, by X-ray diffraction, scanning electron microscopy, and tensile bonding testing. Corrosion behavior and bioactivity were investigated using potentiodynamic polarization, electrochemical impedance spectroscopy, and immersion testing. Results show that the HVSFS Zn/HA composite layers were mainly composed of Zn, HA, and ZnO and were well bonded to the substrate. The HVSFS HA upper layer on the CS Zn underlayer in the Zn/HA-DL coating exhibited microcracks due to their mismatched thermal expansion coefficient (CTE). The Zn/HA-ML coating exhibited good bonding within different layers and showed a higher bonding strength of 27.3 ± 2.3 MPa than the Zn/HA-DL coating of 20.4 ± 2.7 MPa. The CS Zn coating, Zn/HA-DL coating, and Zn/HA-ML coating decreased the corrosion current density of the Mg alloy substrate by around two–fourfold from 3.12 ± 0.75 mA/cm² to 1.41 ± 0.82mA/cm², 1.06 ± 0.31 mA/cm², and 0.88 ± 0.27 mA/cm², respectively. The Zn/HA-ML coating showed a sixfold decrease in the corrosion current density and more improvements in the corrosion resistance by twofold after an immersion time of 14 days, which was mainly attributed to newly formed apatite and corrosion by-products of Zn particles. The Zn/HA-ML coating effectively combined the advantages of the corrosion resistance of CS Zn underlayer and the bioactivity of HVSFS Zn/HA multi-layers, which proposed a low-temperature strategy for improving corrosion resistance and bioactivity for implant metals. Full article

(This article belongs to the Special Issue Corrosion and Corrosion Inhibition of Metals and Their Alloys II)

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10 pages, 4269 KiB

Open AccessArticle

Manipulating the Cathodic Modification Effect on Corrosion Resistance of High Corrosion-Resistant Titanium Alloy

and

Materials 2023, 16(18), 6217; https://doi.org/10.3390/ma16186217 - 15 Sep 2023

Viewed by 406

Abstract

Further improving the corrosion resistance of the ASTM Grade 13 (Gr13) titanium alloy was achieved by manipulating the cathodic modification effect. The cathodic modification of Gr13 was mainly related to the Ti₂Ni precipitate, where minor Ru was contained and controlled the precipitate in terms of size and distribution, which could manipulate the cathodic modification effect. Parameters such as temperature and cooling rate during the recrystallization process were designed to control precipitation behavior, where the temperature at 850 °C was selected to allow the full dissolution of the Ti₂Ni precipitate. The cooling rate, as high as 160.9 °C/min, was still enough for precipitation to occur during the cooling stage, leading to the formation of the Ti₂Ni precipitate along with a grain boundary. The cooling rate of water quenching was too fast to cause the diffusion process, resulting in a large amount of the β-Ti phase without the precipitate, which was pre-formed while heated at 850 °C. Aging at 600 °C caused the re-precipitation of Ti₂Ni, and, at that moment, the precipitate was refined and separated, as a good aspect of the catalyst for HER. Therefore, the aged sample after water quenching showed the lowest onset potential for HER with the highest corrosion potential, indicating that its passivation ability was improved by the strengthened cathodic modification effect. This improvement was confirmed by the OCP results, where passivation survival was observed for the aged sample due to the highest cathodic modification effect. Therefore, the aged sample, which had refined and separate precipitates, showed the lowest corrosion rate. Full article

(This article belongs to the Special Issue Corrosion and Corrosion Inhibition of Metals and Their Alloys II)

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