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Corrosion Technology and Electrochemistry of Metals and Alloys

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

Deadline for manuscript submissions: 20 December 2024 | Viewed by 2193

Special Issue Editor


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Guest Editor
Joining Technology Department, Korea Institute of Materials Science, 797, Changwondae-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, Republic of Korea
Interests: corrosion; nuclear material; nuclear fuel cycle; electrochemistry; stress corrosion cracking; surface modification; corrosion monitoring; additive manufacturing

Special Issue Information

Dear Colleagues,

This Special Issue on “Corrosion Technology and Electrochemistry of Metal and Alloy” will serve as a platform to explore the intricate realm of material degradation, focusing on corrosion processes, technological advancements, and electrochemical interventions in metals and alloys.

Corrosion, an inevitable natural phenomenon, poses significant challenges across industries by affecting the integrity, performance, and longevity of various materials. This Special Issue delves into the latest research and innovations that shed light on corrosion mechanisms, mitigation strategies, and the development of novel materials with enhanced resistance to corrosive environments.

The integration of electrochemical principles into corrosion studies has opened new avenues for understanding the underlying mechanisms and designing effective protection methods. This Special Issue will delve into the synergy between corrosion science and electrochemistry, encompassing topics such as corrosion monitoring techniques, surface modification methods, and the application of advanced analytical tools to characterize material behavior.

We extend our gratitude to the contributors for their dedication to unraveling the complexities of corrosion and electrochemistry. Their valuable insights and discoveries will undoubtedly enrich the knowledge base and inspire further breakthroughs in the realm of materials science and engineering.

We hope this compilation will foster a deeper understanding of the challenges and opportunities of corrosion while stimulating collaborative efforts to combat its detrimental effects.

I am delighted to extend an invitation for you to contribute a manuscript to this Special Issue. We warmly welcome full papers, communications, and reviews to be a part of this publication.

Dr. Seunghyun Kim
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. 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

  • corrosion mechanism & modelling
  • corrosion in additive manufactured metals
  • corrosion in high-temperature & extreme environments
  • electrochemical characteristics of metals
  • environmentally assisted cracking
  • surface modification & coatings
  • corrosion monitoring & sensors

Published Papers (4 papers)

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Research

13 pages, 2157 KiB  
Article
Study of Precipitated Secondary Phase at 700 °C on the Electrochemical Properties of Super Duplex Stainless Steel AISI2507: Advanced High-Temperature Safety of a Lithium-Ion Battery Case
by Byung-Hyun Shin, Seongjun Kim, Jinyong Park, Jung-Woo Ok, Dohyung Kim and Jang-Hee Yoon
Materials 2024, 17(9), 2009; https://doi.org/10.3390/ma17092009 - 25 Apr 2024
Viewed by 216
Abstract
Super duplex stainless steel (SDSS) is a suitable structural material for various engineering applications due to its outstanding strength and corrosion resistance. In particular, its high-temperature strength can enhance the safety of electronic products and cars. SDSS AISI2507, known for its excellent strength [...] Read more.
Super duplex stainless steel (SDSS) is a suitable structural material for various engineering applications due to its outstanding strength and corrosion resistance. In particular, its high-temperature strength can enhance the safety of electronic products and cars. SDSS AISI2507, known for its excellent strength and high corrosion resistance, was analyzed for its microstructure and electrochemical behavior at the ignition temperature of Li-ion batteries, 700 °C. At 700 °C, AISI2507 exhibited secondary phase precipitation values of 1% and 8% after 5 and 10 h, respectively. Secondary phase precipitation was initiated by the expansion of austenite, forming sigma, chi, and CrN phases. The electrochemical behavior varied with the fraction of secondary phases. Secondary phase precipitation reduced the potential (From −0.25 V to −0.31 V) and increased the current density (From 8 × 10−6 A/cm2 to 3 × 10−6 A/cm2) owing to galvanic corrosion by sigma and chi. As the fraction of secondary phases increased (From 0.0% to 8.1%), the open circuit potential decreased (From −0.25 V to −0.32 V). Secondary phase precipitation is a crucial factor in reducing the corrosion resistance of SDSS AISI2507 and occurs after 1 h of exposure at 700 °C. Full article
(This article belongs to the Special Issue Corrosion Technology and Electrochemistry of Metals and Alloys)
21 pages, 8125 KiB  
Article
Corrosion Mechanism and Electrochemical Reactions on Alloy 690 in Simulated Primary Coolant of Water–Water Energy Reactors
by Martin Bojinov, Iva Betova and Vasil Karastoyanov
Materials 2024, 17(8), 1846; https://doi.org/10.3390/ma17081846 - 17 Apr 2024
Viewed by 369
Abstract
During the power operation of the primary loop of a water cooled–water moderated energy reactor (WWER), the water chemistry evolves from a high-boron high-potassium composition to significantly lower concentrations of both constituents at the end of a campaign, and the Li concentration reaches [...] Read more.
During the power operation of the primary loop of a water cooled–water moderated energy reactor (WWER), the water chemistry evolves from a high-boron high-potassium composition to significantly lower concentrations of both constituents at the end of a campaign, and the Li concentration reaches ca. 0.7–0.9 ppm. In the present paper, the effect of primary water chemistry evolution during operation on the corrosion rate and conduction mechanism of oxides on Alloy 690 is studied by in situ impedance spectroscopy at 300 °C/9 MPa during 1-week exposures in an autoclave connected to a re-circulation loop. At the end of exposure, the samples were anodically polarized at potentials −0.8 to −0.1 V vs. SHE to evaluate the stability of the passive oxide. Simultaneously exposed samples of Alloy 690 were subsequently analyzed by XPS to estimate the thickness and in-depth composition of oxides. Impedance data were quantitatively interpreted using the mixed-conduction model (MCM) for oxide films. The effect of water chemistry evolution on the corrosion rate and conduction mechanism in the oxide on Alloy 690 in a primary coolant is discussed based on the obtained parameters. Full article
(This article belongs to the Special Issue Corrosion Technology and Electrochemistry of Metals and Alloys)
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17 pages, 2845 KiB  
Article
Novel Additives in Copper Electrorefining—Small Laboratory Scale
by Patrycja Kowalik, Dorota Kopyto, Katarzyna Leszczyńska-Sejda and Wojciech Simka
Materials 2024, 17(6), 1262; https://doi.org/10.3390/ma17061262 - 08 Mar 2024
Viewed by 640
Abstract
This research aimed to evaluate the effectiveness of new organic substances, including a novel ionic liquid based on polyhexamethylenebiguanidine, polyhexamethyleneguanidine, and safranin in the copper electrorefining process. Experiments were conducted on a small laboratory scale using industrial copper anodes. Single doses of new [...] Read more.
This research aimed to evaluate the effectiveness of new organic substances, including a novel ionic liquid based on polyhexamethylenebiguanidine, polyhexamethyleneguanidine, and safranin in the copper electrorefining process. Experiments were conducted on a small laboratory scale using industrial copper anodes. Single doses of new additives did not improve process indicators (current efficiency, average cell voltage, specific energy consumption) or the quality of copper cathode deposits. However, a combination of a new ionic liquid based on polyhexamethylenebiguanidine and thiourea resulted in a satisfactory current efficiency of 97%, an average cell voltage of 0.110 V, a low specific energy consumption index of approximately 100 kWh/tCu, and smooth cathode surfaces. These results were superior to those obtained with industrial additives (bone glue and thiourea). The findings enhance our understanding of how these substances influence the electrorefining process and suggest the potential for more efficient and sustainable methods. Further research is recommended to validate these findings and explore their industrial applications. Full article
(This article belongs to the Special Issue Corrosion Technology and Electrochemistry of Metals and Alloys)
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15 pages, 8014 KiB  
Article
Investigation of Corrosion Behavior of Oxygen-Free Copper Canisters in Groundwater Chemistry of Deep Geological Repositories
by Tae Ho Yun, Taeyong Kim, Seunghyun Kim and Jisoo Kim
Materials 2024, 17(1), 74; https://doi.org/10.3390/ma17010074 - 22 Dec 2023
Cited by 1 | Viewed by 643
Abstract
The disposal of nuclear waste represents a paramount concern for human safety, and the corrosion resistance of containers within the disposal environment stands as a critical factor in ensuring the integrity of such waste containment systems. In this report, the corrosion behavior of [...] Read more.
The disposal of nuclear waste represents a paramount concern for human safety, and the corrosion resistance of containers within the disposal environment stands as a critical factor in ensuring the integrity of such waste containment systems. In this report, the corrosion behavior of copper canisters was monitored in Olkiluoto-simulated/-procured groundwater (South Korea) with different temperatures. The exposure of copper in the procured groundwater at 70 °C revealed a 3.7-fold increase in corrosion vulnerability compared with room temperature conditions, with a current density of 12.7 μA/cm2. During a three-week immersion test in a controlled 70 °C chamber, the canister in the Korean groundwater maintained a constant weight. In contrast, its counterpart in the simulated groundwater revealed continuous weight loss, indicating heightened corrosion. An X-ray diffraction (XRD) analysis identified corrosion byproducts, specifically Cu2Cl3(OH) and calcite (CaCO3), in the simulated groundwater, confirming its corrosive nature. The initial impedance analysis revealed distinct differences: Korean groundwater exhibits high pore resistance and diffusion effects, while the simulated groundwater shows low pore resistance. Consequently, the corrosion of copper canisters in the Korean environment is deemed relatively stable because of significant differences in ion concentrations. Full article
(This article belongs to the Special Issue Corrosion Technology and Electrochemistry of Metals and Alloys)
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