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Coatings
Special Issues
Advances in Wear-Resistant Coatings
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Advances in Wear-Resistant Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: 30 May 2024 | Viewed by 2164

Special Issue Editors

Dr. Hui Liang

E-Mail Website
Guest Editor
School of Physics and Electronic Technology, Liaoning Normal University, Dalian, China
Interests: coatings; high-entropy alloys; microstructure; tribology performance
Prof. Dr. Zhiqiang Cao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Dalian University of Technology, Dalian, China
Interests: high-entropy alloy coatings; synchrotron radiation characterization of metal matrix composites and solidification microstructure control of nonferrous metals

Special Issue Information

Dear Colleagues,

Wear-resistant coatings have important advantages over low friction coefficients, large load bearing capacities, wide temperature ranges, and so on. In recent years, significant progress has been made in the development of wear-resistant coatings for protecting materials in various environments (seawater, dryness, and high temperatures), such as advanced composite material coatings, new high-entropy alloy coatings, conversion coatings, and plasma coatings. Coating preparation technology has also reached a new level, such as new electrochemical and chemical conversion methods, sol–gel methods, plasma-enhanced growth, laser strengthening, etc. Exploring new coating materials, including alloys, polymers, ceramics, composites, and nanostructured materials, has facilitated the discovery of multifunctional coatings for applications in aerospace, civil machinery, and other fields.

This scope of this Special Issue will include, but is not limited to, the following fundamental and applied research topics:

  • Research developments in new organic, inorganic, and composite coatings;
  • Coating technology and processes: sol–gel, hydrothermal, laser, plasma, thermal spray, electroplating, chemical deposition, physical vapor deposition, chemical vapor deposition, chromating, fluorozirconating, fluorotitanating, phosphating, bluing, black oxide coating formation, anodizing, etc.;
  • Dry-wear-resistant coatings;
  • High-temperature wear-resistant coatings;
  • Wear-corrosion-resistant coatings;
  • Wear mechanisms in dry conditions, corrosive liquids, high temperatures, etc.;
  • Test methods for determining the wear-resistant levels of coatings in various environments;
  • The modeling and simulation of coating processing and wear;
  • Nanostructured composite coatings and wear characterization.

Dr. Hui Liang
Prof. Dr. Zhiqiang Cao
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. Coatings 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

  • wear-resistant coatings
  • polymers, ceramics, alloys, and composite coatings
  • nanostructured coating modeling and simulation
  • coating processes
  • tribological mechanism of coatings

Published Papers (2 papers)

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Research

10 pages, 3330 KiB  
Article
Microstructure and Dry-Sliding Wear Resistance of CoCrFeNiMoTix High Entropy Alloy Coatings Produced by Laser Cladding
by Hui Liang, Jinxin Hou, Li Jiang and Zhiqiang Cao
Coatings 2024, 14(2), 221; https://doi.org/10.3390/coatings14020221 - 12 Feb 2024
Viewed by 882
Abstract
The new-type CoCrFeNiMoTix high-entropy alloy coatings were successfully devised and prepared on Q235 steel using laser cladding. Influence of Ti content on their microstructure and wear-resistance was studied systematically; the relevant mechanisms were deeply revealed. The CoCrFeNiMoTix coatings consisted of NiTi, [...] Read more.
The new-type CoCrFeNiMoTix high-entropy alloy coatings were successfully devised and prepared on Q235 steel using laser cladding. Influence of Ti content on their microstructure and wear-resistance was studied systematically; the relevant mechanisms were deeply revealed. The CoCrFeNiMoTix coatings consisted of NiTi, FCC, and BCC phases, and with the increasing of Ti content, contents of BCC phase and FCC phase gradually increased and decreased, respectively. The CoCrFeNiMoTi0.75 coating had the highest hardness (950 HV), which was about 6.5 times higher than the substrate (Q235 steel, 150 HV). According to Archard law, metal materials’ wear resistance is generally proportional to hardness; thus, the CoCrFeNiMoTi0.75 high entropy alloy coating with the highest hardness showed the best wear resistance, exhibiting a wear mechanism of slight abrasive wear. Full article
(This article belongs to the Special Issue Advances in Wear-Resistant Coatings)
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9 pages, 2740 KiB  
Article
Optimization of the Forming Quality of a Laser-Cladded AlCrFeNiW0.2 High-Entropy Alloy Coating
by Hui Liang, Jianhong Liu, Likun Sun, Jinxin Hou and Zhiqiang Cao
Coatings 2023, 13(10), 1744; https://doi.org/10.3390/coatings13101744 - 09 Oct 2023
Viewed by 1073
Abstract
Laser cladding is an effective surface strengthening method widely used in the surface treatment of extreme operating components such as gas turbines, aviation engines, and nuclear facilities. However, traditional cladding layers struggle to meet the diverse application needs of extreme working conditions due [...] Read more.
Laser cladding is an effective surface strengthening method widely used in the surface treatment of extreme operating components such as gas turbines, aviation engines, and nuclear facilities. However, traditional cladding layers struggle to meet the diverse application needs of extreme working conditions due to their single cladding material and poor forming quality. Therefore, this article selected the new-type high-entropy alloy as the coating material and optimized its laser cladding process parameters in order to obtain an AlCrFeNiW0.2 high-entropy alloy coating with an excellent forming quality. It was found that as the laser power increased from 300 to 1800 W, the AlCrFeNiW0.2 high-entropy alloy coating transitioned from the incomplete or near-melted state to the fully and over-melted state gradually, while the coating showed the opposite trend of change as the laser scanning speed increased from 0.002 to 0.008 m/s. And when the laser power was 1000 W, the scanning speed was 0.005 m/s, and the spot diameter was 0.003 m, the AlCrFeNiW0.2 high-entropy alloy coating with a low dilution rate (9.95%) had no defects such as pores and cracks, and achieved good metallurgical bonding with Q235 steel substrate, demonstrating excellent forming quality. These could provide valuable theoretical and technical guidance for optimizing the laser cladding process and forming quality of new-type high-entropy alloy coatings. Full article
(This article belongs to the Special Issue Advances in Wear-Resistant Coatings)
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