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Advances in Metal Coatings for Wear and Corrosion Applications

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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 3788

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Special Issue Editors

Prof. Dr. Georgi Kostadinov

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Guest Editor

Institute of Soil Science, Agrotechnology and Plant Protection "Nikola Pushkarov", Sofia, Bulgaria
Interests: mechanisation of agriculture; agricultural engineering; mechanical properties; materials engineering; coating surface engineering; electrospark deposition; mathematical modelling; optimisation

Dr. Todor Penyashki

E-Mail Website
Guest Editor

Institute of Soil Sciences, Agrotechnologies and Plant Protection “N. Pushkarov”, Sofia, Bulgaria
Interests: mechanical properties; materials engineering; coating surface engineering; electrospark deposition; technologies; tribology; powder technologies; intermetallic; mechanisation of agriculture; agricultural engineering

Dr. Mara Kandeva

E-Mail Website
Guest Editor

Faculty of Industrial Technology, Technical University of Sofia, Sofia, Bulgaria
Interests: tribology; friction; coating; lubrication; wear testing; surface engineering; materials

Special Issue Information

Dear Colleagues,

Wear- and corrosion-resistant coatings are among the most effective technological means for increasing the durability of equipment and machines and reducing labour, energy, and material costs; they are being increasingly used in all technical fields. In many cases, using coatings is the only possible or most economical decision to solve several technical problems. However, for the various products' numerous and different operating conditions, it is necessary to create coatings that differ in composition, structure, and morphology.

On the other hand, the modern intensification of production and operational processes also gives rise to the need to develop and create new coatings with improved composition, structure, construction, and properties. That is why the creation and development of new functional coatings with improved characteristics and increased service properties and the development of new coating materials and technologies for their deposition is one of the current research directions in advanced materials science.

This Special Issue, titled “Advances in Metal Coatings for Wear and Corrosion Applications”, aims to collate the latest advances in the field of wear- and corrosion-resistant coatings and provide a platform for their dissemination among scientists, researchers, and industrial experts.

We cordially invite you to contribute a research or review article to this Special Issue and make your scientific work more discoverable and popular.

We encourage the submission of work focused on, but not limited to, the following topics:

Development and improvement of processes and methods for surface modification;
Development of new coating materials and improvement of the technologies for their application, with possibilities to control the processes and characteristics of the resulting coatings;
Patterns of formation, quality characteristics, and properties of the resulting coatings;
Creation of and research into new wear- and corrosion-resistant coatings from new roofing materials, meeting different requirements depending on the specific operating conditions, such as improved microhardness, connection to the substrate, strength and toughness, heat resistance, biocompatibility, wear resistance, corrosion resistance, and economic efficiency;
Composite and multilayer coatings with a structure of layers with different phase compositions, and also with an amorphous and nanocrystalline structure;
Studies on the influence of the type and processing modes of surface treatment and the type of covering materials on the composition, structure, morphology, mechanism, and regularities of friction wear and corrosion wear of the modified surfaces;
Methods for research and modelling of the surface properties.

Prof. Dr. Georgi Kostadinov
Dr. Todor Penyashki
Dr. Mara Kandeva
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. 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

coatings
processes and methods
surface modification
new coating materials
structure
wear and corrosion resistance
characteristics
properties
biocompatibility

Published Papers (5 papers)

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Research

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16 pages, 12831 KiB

Open AccessArticle

Electrochemical Characterization of Electrodeposited Copper in Amine CO₂ Capture Media

by Corentin Penot, Kranthi Kumar Maniam and Shiladitya Paul

Materials 2024, 17(8), 1825; https://0-doi-org.brum.beds.ac.uk/10.3390/ma17081825 - 16 Apr 2024

Viewed by 354

Abstract

This study explores the stability of electrodeposited copper catalysts utilized in electrochemical CO₂ reduction (ECR) across various amine media. The focus is on understanding the influence of different amine types, corrosion ramifications, and the efficacy of pulse ECR methodologies. Employing a suite of electrochemical techniques including potentiodynamic polarization, linear resistance polarization, cyclic voltammetry, and chronopotentiometry, the investigation reveals useful insights. The findings show that among the tested amines, CO₂-rich monoethanolamine (MEA) exhibits the highest corrosion rate. However, in most cases, the rates remain within tolerable limits for ECR operations. Primary amines, notably monoethanolamine (MEA), show enhanced compatibility with ECR processes, attributable to their resistance against carbonate salt precipitation and sustained stability over extended durations. Conversely, tertiary amines such as methyldiethanolamine (MDEA) present challenges due to the formation of carbonate salts during ECR, impeding their effective utilization. This study highlights the effectiveness of pulse ECR strategies in stabilizing ECR. A noticeable shift in cathodic potential and reduced deposit formation on the catalyst surface through periodic oxidation underscores the efficacy of such strategies. These findings offer insights for optimizing ECR in amine media, thereby providing promising pathways for advancements in CO₂ emission reduction technologies. Full article

(This article belongs to the Special Issue Advances in Metal Coatings for Wear and Corrosion Applications)

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14 pages, 28820 KiB

Open AccessArticle

Research on Coated Tool Life and Wear in Ta-2.5W Alloy Turning

by Bo Hu, Zhengqing Liu, Yang Wu, Qiucheng Wang and Dayu Shu

Materials 2024, 17(7), 1481; https://0-doi-org.brum.beds.ac.uk/10.3390/ma17071481 - 24 Mar 2024

Viewed by 532

Abstract

Due to its inherent high hardness, strength, and plasticity, tantalum–tungsten (Ta-W) alloy poses a considerable challenge in machining, resulting in pronounced tool wear, diminished tool lifespan, and suboptimal surface quality. This study undertook experiments utilizing uncoated carbide tools, TiAlN-coated carbide tools, and AlTiN-coated carbide tools for machining Ta-2.5W alloy. The investigation delved into the intricacies of surface temperature, tool longevity, and the distinctive wear characteristics under varying coating materials and cutting parameters. Concurrently, a comprehensive exploration of the wear mechanisms affecting the tools was conducted. Among the observed wear modes, flank wear emerged as the predominant issue for turning tools. Across all three tool types, adhesive wear and diffusion wear were identified as the principal wear mechanisms, with the TiAlN-coated tools displaying a reduced level of wear compared to their AlTiN-coated counterparts. The experimental findings conclusively revealed that TiAlN-coated carbide tools exhibited an extended tool lifespan in comparison to uncoated carbide tools and AlTiN-coated carbide tools, signifying superior cutting performance. Full article

(This article belongs to the Special Issue Advances in Metal Coatings for Wear and Corrosion Applications)

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16 pages, 4961 KiB

Open AccessArticle

Improving the Surface Quality and Tribological Characteristics of 3D-Printed Titanium Parts through Reactive Electro-Spark Deposition

by Georgi Kostadinov, Todor Penyashki, Antonio Nikolov and Aleksandar Vencl

Materials 2024, 17(2), 382; https://0-doi-org.brum.beds.ac.uk/10.3390/ma17020382 - 12 Jan 2024

Viewed by 525

Abstract

This work presents the results of research conducted with an aim to improve the surface quality, hardness and wear resistance of titanium alloy Ti6Al4V, obtained via the laser powder bed fusion of metals (PBF-LB/M) process of additive manufacturing (AM) known as the 3D printing of metals. The 3D surfaces were coated via reactive electrospark deposition (RESD) with low-pulse energy and electrode materials of low-melting metals and multi-component hard alloys. The relationship between the electrical parameters of the RESD process and the quality, composition, structure, microhardness and wear resistance of the treated surfaces were investigated and analysed. It was found that the roughness and thickness of the resulting surface layers could be changed by changing the RESD modes within the limits of 2.5–5 µm and 8–20 µm, respectively. RESD processing allowed us to achieve two to five times lower roughness than that of titanium AM surfaces. The microhardness and wear resistance of the RESD surfaces are two to four times higher than those of the titanium substrate. Possibilities for the purposeful synthesis of new wear-resistant phases and compounds and for obtaining surface layers with predetermined thickness and roughness were established. It was shown that the subsequent reaction’s electrospark processing helped to simultaneously reduce the roughness and increase the hardness and wear resistance of the modified surfaces, and can be successfully used instead of the material-energy-labour and machine-intensive finishing treatments of the titanium surfaces obtained after 3D printing. Full article

(This article belongs to the Special Issue Advances in Metal Coatings for Wear and Corrosion Applications)

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12 pages, 3871 KiB

Open AccessArticle

Testing for Abrasion Resistance of WC-Co Composites for Blades Used in Wood-Based Material Processing

by Joanna Wachowicz, Joanna Fik, Zbigniew Bałaga and Grzegorz Stradomski

Materials 2023, 16(17), 5836; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16175836 - 25 Aug 2023

Cited by 1 | Viewed by 587

Abstract

Commonly used tool materials for machining wood-based materials are WC-Co carbides. Although they have been known for a long time, there is still much development in the field of sintered tool materials, especially WC-Co carbides and superhard materials. The use of new manufacturing methods (such as FAST—field-assisted sintering technology), which use pulses of electric current for heating, can improve the properties of the materials used for cutting tools, thereby increasing the cost-effectiveness of machining. The ability to increase tool life without the downtime associated with tool wear allows significant cost savings, particularly in mass production. This paper presents the results of a study of the effect of grain size and cobalt content of carbide tool sinters on the tribological properties of the materials studied. The powders used for consolidation were characterised by irregular shape and formed agglomerates of different sizes. Tribological tests were carried out using the T-01 (ball-on-disc) method. In order to determine the wear kinetics, the entire friction path was divided into 15 cycles of 200 m and the weight loss was measured after each stage. In order to determine the mechanism and intensity of wear of the tested materials under technically dry friction conditions, the surface of the tested sinters was observed before the test and after 5, 10, and 15 cycles. The conclusions of the study indicate that the predominant effect of surface cooperation at the friction node is abrasion due to the material chipping that occurs during the process. The results confirm the influence of sintered grain size and cobalt content on durability. In the context of the application of the materials in question for cutting tools, it can be pointed out that sintered WC(0.4)_4 has the highest potential for use in the manufacture of cutting tools. Full article

(This article belongs to the Special Issue Advances in Metal Coatings for Wear and Corrosion Applications)

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Review

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20 pages, 8121 KiB

Open AccessReview

Research Progress on the Wear Resistance of Key Components in Agricultural Machinery

by Ying Wang, Dong Li, Cheng Nie, Pan Gong, Junsheng Yang, Zhigang Hu, Bin Li and Ming Ma

Materials 2023, 16(24), 7646; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16247646 - 14 Dec 2023

Cited by 1 | Viewed by 1029

Abstract

Agricultural mechanization is crucial in enhancing production efficiency, alleviating labor demands, reducing costs, improving agricultural product quality, and promoting sustainable development. However, wear and tear are inevitable when using agricultural machinery. The failure of critical wear-resistant parts is responsible for over 50% of rural machinery breakdowns. For instance, a domestic combine harvester typically only operates trouble-free for 20 to 30 h, and the service life of a rotary plow knife is approximately 80 h. Investigating the wear performance of key farm machinery components reinforces machinery design and maintenance strategies, extends machinery lifespans, enhances agricultural production efficiency, and advances agrarian sustainability. This paper provides a comprehensive overview of the latest research on the wear resistance of crucial agricultural machinery components. It delves into the factors influencing the wear resistance of these components and explores current effective measures to address wear-related issues. Additionally, it also summarizes the challenges and opportunities in researching the wear performance of key components in agricultural machinery and future development directions. Full article

(This article belongs to the Special Issue Advances in Metal Coatings for Wear and Corrosion Applications)

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