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Coatings
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Laser Additive Manufacturing of Coatings: Microstructure, Properties, and Applications
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Laser Additive Manufacturing of Coatings: Microstructure, Properties, and Applications

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "High-Energy Beam Surface Engineering and Coatings".

Deadline for manuscript submissions: 25 October 2026 | Viewed by 1044

Special Issue Editors

Dr. Wenbin Gao

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
Interests: laser cladding; coatings; surface modification; microstructure; corrosion; wear
Dr. Taotao Li

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
Interests: laser cladding; laser welding; coatings; microstructure; corrosion; wear
Dr. Shengbin Zhao

E-Mail Website
Guest Editor
School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215137, China
Interests: laser cladding; laser welding; coatings; composites; microstructure; wear
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your research work to our Special Issue, “Laser Additive Manufacturing of Coatings: Microstructure, Properties, and Applications”. Compared to electroplating and thermal spraying, laser additive manufacturing of coatings offers significant advantages including high bonding strength, low dilution rates, narrow heat-affected zones, dense microstructures, and high processing flexibility. As an advanced digital and flexible surface engineering and remanufacturing technology, laser additive manufacturing is playing an increasingly important role in high-end equipment manufacturing. The topics of interest for this Special Issue include, but are not limited to, the following:

  • Development of novel material systems, including high-entropy alloy (HEA) coatings, amorphous/metal glass coatings, composite coatings, functionally graded coatings, and biomedical coatings.
  • Ultra-high-speed laser cladding (EHLA) and multi-energy field-assisted laser cladding.
  • Process monitoring and intelligent control, including in situ monitoring, AI-based adaptive real-time control, etc.
  • Fundamental theoretical studies and simulations, such as melt pool dynamics, rapid solidification theory, and stress evolution and deformation control.

Performance enhancement and evaluation, particularly the degradation mechanisms and lifetime prediction under extreme service conditions including severe corrosion, intense irradiation, high-temperature wear, and their coupled effects.

Dr. Wenbin Gao
Dr. Taotao Li
Dr. Shengbin Zhao
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 250 words) can be sent to the Editorial Office for assessment.

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

  • laser cladding
  • laser metal deposition
  • additive manufacturing
  • corrosion
  • wear

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Published Papers (2 papers)

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Research

16 pages, 4634 KB  
Article
Effect of Heat Input on Wear Performance of Laser-Clad WC/W2C Reinforced CoNiV Medium-Entropy Alloy Composite Coatings
by Jiayu Yang, Zhaoyu Dong, Xin Bao, Yongqi Hu, Linghui Meng, Wenbin Gao, Zhou Zheng, Lijun Yang, Mingdi Wang and Shengbin Zhao
Coatings 2026, 16(5), 518; https://doi.org/10.3390/coatings16050518 - 24 Apr 2026
Viewed by 182
Abstract
CoNiV medium-entropy alloy (MEA) composite coatings reinforced with 40 wt.% tungsten carbide (WC/W2C) particles were fabricated on carbon steel via laser cladding under nominal heat inputs ranging from 75 to 150 J/mm. The phase constituents and microstructural evolution were investigated, revealing [...] Read more.
CoNiV medium-entropy alloy (MEA) composite coatings reinforced with 40 wt.% tungsten carbide (WC/W2C) particles were fabricated on carbon steel via laser cladding under nominal heat inputs ranging from 75 to 150 J/mm. The phase constituents and microstructural evolution were investigated, revealing that the coatings were primarily composed of an FCC matrix, retained WC/W2C particles, and in situ formed V-rich and VWC2 carbides. While the phase compositions remained generally consistent, the features of the reinforcement architecture varied with the extent of WC/W2C dissolution governed by laser heat inputs. At low heat inputs, limited particle dissolution yielded sparsely distributed in situ carbides, whereas excessive dissolution at high heat inputs promoted the agglomeration of dense and coarse carbides, driving the microhardness to peak at 570.5 HV0.5. However, the coating deposited at 150 J/mm exhibited compromised wear resistance due to the fragmentation and detachment of these coarse carbides, which intensified abrasive wear. In contrast, moderate dissolution at intermediate heat input (100 J/mm) facilitated the formation of fine in situ carbides in interparticle regions. This resulted in a homogeneous multiscale synergistic reinforcement microstructure that endowed the coating with optimal wear performance. By precisely controlling heat input to regulate in-situ precipitation, this study established a solid foundation for tailoring wear resistance and expanding the application of composite coatings. Full article
(This article belongs to the Special Issue Laser Additive Manufacturing of Coatings: Microstructure, Properties, and Applications)
16 pages, 15928 KB  
Article
High-Temperature Tribological and Oxidation Performance of a Cr-Al-C Composite Coating on H13 Steel by Laser Cladding
by Shengshu Zuo, Shibo Li, Yixiong Zhang, Xuejin Zhang, Guoping Bei, Faqiang Chen and Dong Liu
Coatings 2026, 16(1), 88; https://doi.org/10.3390/coatings16010088 - 10 Jan 2026
Viewed by 542
Abstract
Laser cladding is an effective surface engineering technique to enhance the high-temperature performance of metallic materials. In this work, a Cr-Al-C composite coating was in situ fabricated on H13 steel by laser cladding to alleviate the performance degradation of H13 steel under severe [...] Read more.
Laser cladding is an effective surface engineering technique to enhance the high-temperature performance of metallic materials. In this work, a Cr-Al-C composite coating was in situ fabricated on H13 steel by laser cladding to alleviate the performance degradation of H13 steel under severe thermomechanical conditions, particularly in high-temperature piercing applications. The phase composition, microstructure, microhardness, high-temperature oxidation behavior, and tribological performance of the coating were systematically investigated. The coating is mainly composed of a B2-ordered Fe-Cr-Al phase reinforced by uniformly dispersed M3C2/M7C3-type carbides, which provides a synergistic combination of oxidation protection and mechanical strengthening, offering a microstructural design that differs from conventional Cr-Al or Cr3C2-based laser-clad coatings. Cyclic oxidation tests conducted at 800–1000 °C revealed that the oxidation behavior of the coating followed parabolic kinetics, with oxidation rate constants significantly lower than those of the H13 substrate, attributed to the formation of a dense and adherent Al2O3/Cr2O3 composite protective scale acting as an effective diffusion barrier. Benefiting from the stable oxide layer and the thermally stable carbide-reinforced microstructure, the wear rate of Cr-Al-C coating is significantly reduced compared to H13 steel. At room temperature, the wear rate of the coating is 6.563 × 10−6 mm3/(N·m), about two orders of magnitude lower than 8.175 × 10−4 mm3/(N·m) for the substrate. When the temperature was increased to 1000 °C, the wear rate of the coating remained as low as 5.202 × 10−6 mm3/(N·m), corresponding to only 1.9% of that of the substrate. This work demonstrates that the Cr-Al-C laser-cladded coating can effectively improve the high-temperature oxidation resistance and wear resistance of steel materials under extreme service conditions. Full article
(This article belongs to the Special Issue Laser Additive Manufacturing of Coatings: Microstructure, Properties, and Applications)
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