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Special Issue "Corrosion and Oxidation of Alloys"

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A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: 30 November 2023 | Viewed by 3069

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Special Issue Editors

Dr. Luntao Wang

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Guest Editor

Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH, USA
Interests: corrosion; oxidation; alloys; surface analysis; coatings

Dr. Baojie Dou

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Department of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong, China
Interests: corrosion; electrochemistry; advanced functional coating

Dr. Xuejie Li

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Department of Chemistry, Western University, London, ON, Canada
Interests: high entropy alloy; corrosion; oxidation

Dr. Zhongyu Cui

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Guest Editor

School of Materials Science and Engineering, Ocean University of China, Qingdao, China
Interests: corrosion; oxidation; alloys; coatings; stress corrosion cracking

Special Issue Information

Dear Colleagues,

Traditional alloys, such as stainless steels, nickel alloys, aluminium alloys, etc., are used extensively in high-tech and industrial fields such as the aerospace, energy power, manufacturing and petrochemical industry. However, the alloys in service are unavoidably subject to deterioration, either by corrosion at room temperature or by oxidation at high temperature. This deterioration is a highly dangerous and costly issue and has a major impact on the economies of industrial nations; thus, understanding the corrosion and oxidation properties of alloys is of enormous practical importance.

In recent years, several innovative alloys (e.g., high entropy alloys, additive manufacturing alloys, superalloys and refractory alloys) possessing excellent mechanical performance have been developed, but the corrosion and oxidation properties of these innovative alloys remain unknown and urgently need to be explored.

This Special Issue of Crystals aims to present the recent progress and advances regarding the corrosion and oxidation behaviour of both traditional and innovative alloy materials. Full-length articles and review papers related to all aspects of the corrosion and oxidation of alloys are welcome to contribute to this Special Issue.

Dr. Luntao Wang
Dr. Baojie Dou
Dr. Xuejie Li
Dr. Zhongyu Cui
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. Crystals 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

corrosion mechanisms
high-temperature oxidation
corrosion of innovative alloys
degradation of traditional alloys
surface analysis techniques to study corrosion

Published Papers (4 papers)

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Research

Open AccessArticle

Effect of UV Irradiation on the Alternating Wet and Dry Corrosion Behavior of Galvanized Steel in Sodium Chloride Solution

and

Crystals 2023, 13(8), 1195; https://doi.org/10.3390/cryst13081195 - 01 Aug 2023

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Abstract

In this paper, the corrosion performance of galvanized steel was investigated in a simulated marine environment, under UV irradiation coupling with an alternating wet and dry cycle in a NaCl solution. The surface morphology, composition, and corrosion performance of galvanized steel before and after different alternating wet and dry corrosion under UV irradiation were investigated. The results show that the corrosion current density gradually increases and the corrosion resistance decreases as a function of the alternating wet and dry corrosion cycles. Meanwhile, UV irradiation accelerates the increase in the corrosion current density and the decrease in the corrosion resistance. In addition, the corrosion product ZnO shows a semiconductor property, and the photo-induced electrons and holes produced under UV can participate in the corrosion reaction and promote the formation of loose corrosion products Zn(OH)₂, Zn₅(OH)₈Cl₂, and Al₂Cl₃(OH)₅·4H₂O, thus accelerating the corrosion of galvanized steel in the atmosphere environment. Full article

(This article belongs to the Special Issue Corrosion and Oxidation of Alloys)

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Open AccessArticle

Flow-Assisted Corrosion of Carbon Steel in Simulated Nuclear Plant Steam Generator Conditions

Iva Betova

Martin Bojinov

and

Vasil Karastoyanov

Crystals 2023, 13(7), 1115; https://doi.org/10.3390/cryst13071115 - 17 Jul 2023

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Abstract

Flow-assisted corrosion occurs via increased dissolution and/or mechanical degradation of protective oxide formed on the surface of construction materials in direct contact with coolant liquids. In the present paper, this phenomenon is studied on carbon steel in an ammonia-ethanolamine-hydrazine electrolyte by in situ electrochemical impedance spectroscopy in conditions that closely simulate those that prevail in nuclear plant steam generators. Based on the obtained results, a quantitative kinetic model of the process is proposed and parameterized by nonlinear regression of experimental data to the respective transfer function. On the basis of the experimental and calculational results, it is concluded that flow-assisted corrosion of carbon steel is limited by oxide dissolution and cation ejection processes and the protective layer–coolant interface. Expressions for the film growth and corrosion release processes are proposed and successfully compared to operational data. Full article

(This article belongs to the Special Issue Corrosion and Oxidation of Alloys)

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Open AccessArticle

Effect of Electrochemical Hydrogen Charging on Blistering and Mechanical Properties Behavior of Q690 Steel

and

Crystals 2023, 13(6), 918; https://doi.org/10.3390/cryst13060918 - 07 Jun 2023

Viewed by 631

Abstract

The purpose of this work is to study the effect of charging conditions on hydrogen damage. The effects of electrochemical hydrogen charging current density and time on hydrogen-induced blistering (HIB), cracking behavior, and mechanical properties of Q690 steel are studied by electrochemical hydrogen charging, microstructure observation, and slow strain rate tensile (SSRT) tests. The results show that HIB and internal cracks occur when the Q690 steel is charged at different current densities. The charging conditions have a significant effect on the HIB characteristics of the material and the morphology, number, size, and location of internal cracks. The geometrical parameters of blisters on the surface of Q690 steel are quantitatively evaluated, and deeper cracks are found at higher hydrogen concentrations. At high hydrogen charging current density (50 mA/cm²), due to the accumulation of a large number of hydrogen atoms and the precipitation of hydrogen, the active sites on Q690 steel surface increase dramatically, leading to the initiation of a large number of blisters. At this time, high current density is responsible for the initiation of blisters. The relationship between hydrogen charging current density and mechanical properties of Q690 steel is studied, and the change in the fracture morphology is observed. The Q690 steel was damaged and failed due to an internal crack caused by excessive hydrogen pressure. On the other hand, electrochemical hydrogen charging leads to the degradation of mechanical properties and the transition from ductile fracture to brittle fracture. Full article

(This article belongs to the Special Issue Corrosion and Oxidation of Alloys)

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Open AccessArticle

Effects of Different CO₂ Concentrations and Degradation Media on Static Corrosion of Commercially Pure Zinc

Souhila Ould Mohamed

Sofia Gambaro

Ana Laura Ramirez-Ledesma

Carlo Paternoster

and

Diego Mantovani

Crystals 2023, 13(5), 753; https://doi.org/10.3390/cryst13050753 - 01 May 2023

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Abstract

Zn alloys have lately captivated the attention of the scientific community as possible materials for cardiovascular applications, showing a corrosion behavior and mechanical properties in between of those of Mg and Fe alloys. To better understand the different aspects of the interaction of Zn with body fluids, the basic corrosion pattern and the degradation products’ formation were investigated considering the effect of CO₂ amount in the atmosphere and different pseudo-physiological media; that is Hanks’ balanced salt (HSS), Dulbecco’s phosphate-buffered saline (PSS) and physiological saline solution (NSS), through a 14-day static immersion study. A mixed degradation layer mainly composed of ZnO with Zn₃(PO₄)₂·4H₂O and Zn(CO₃)₂ precipitates was found on surfaces immersed in both HSS and PSS, independently of the atmosphere, while a ZnO/ZnCl₂ layer was found on the surface immersed in NSS, which also revealed the higher corrosion rate due to the effect of Cl⁻ ions. Samples tested under a CO₂-rich atmosphere showed a more compact passivating layer, higher dimensions crystals and less cavities when tested in HSS, PSS and NSS, respectively. Full article

(This article belongs to the Special Issue Corrosion and Oxidation of Alloys)

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