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Coatings
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Powder Composite Surfaces, Coatings and Films
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Powder Composite Surfaces, Coatings and Films

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

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 6490

Special Issue Editors

Dr. Ivan Shorstkii

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Guest Editor
Advanced Technologies and New Materials Lab, Department of Technological Equipment and Life-Support Systems, Kuban State University of Technology, Moskovskaya 2, 350072 Krasnodar, Russia
Interests: magnetically controlled composite materials and functional coatings; application of magnetic fields for material structurisation and structure control; particle arrays and chains in electromagnetic fields; surface modifications in bio-applications; plasma surface modification and coatings; composite abmaterials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Evgeny Sokolov

E-Mail Website
Guest Editor
Department of Car Service and Material Science, Kuban State Technological University, Moskovskaya 2, 350072 Krasnodar, Russia
Interests: composite materials; nanomaterials; powder metallurgy; sintering; liquid metal solutions; diamond; superhard materials

Special Issue Information

Dear Colleagues,

Recent theoretical and experimental developments in multifunctional coatings as single or multilayers covering metallic substrates are among the most highly exploited research systems in the field of corrosion science and engineering. Research has been spurred primarily by durability in demanding environmental conditions required by current applications ranging from aerospace, medical, automotive and chemical industries to oil and gas technologies. Driven by the current state of knowledge of corrosion prevention mechanisms, the need to maintain the structural material integrity and the reliability of assets under harsh environments and a renewed impetus toward the durability of new nanostructured coating systems, there is huge demand for experimental, theoretical and modeling activities.

The physicochemical and operational properties of materials and coatings depend on their chemical composition and structure. Powder metallurgy makes it possible to obtain new materials and coatings from metal elements that differ greatly in their melting temperature and do not fuse with each other, as well as to combine metals with non-metallic components in one material. Due to this, the use of powder materials ensures the production of products and coatings with a given structure and unique functional properties. The use of powder materials is promising for the production of functional coatings from high-entropy alloys, biocompatible materials and nanostructured, diamond-impregnated and other composites.

Coatings and films from powder materials can be obtained by methods of thermal spraying, laser cladding, composite soldering, sintering and other methods. The sputtering targets from powder materials is used in the PVD process.

Powder metallurgy is becoming more widespread in modern production. In this regard, it is of great interest to modify the surface of sintered materials with diffusion coatings aimed at increasing their operational properties.

The purpose of this Special Issue is to provide a comprehensive view of current advances and development prospects in the field of powder composite surfaces, coatings and films.

The scope of this Special Issue will serve as a forum for papers in the following topics:

  • New methods of forming the structure and properties of the surface of powder materials;
  • Functional powder composite coatings, including nanostructured and biocompatible coatings;
  • Coatings from high-entropy alloys;
  • Obtaining coatings by methods of thermal spraying, PVD technologies, laser deposition, composite soldering and sintering;
  • Modification of the surface of sintered materials, including diffusion coatings.

Prof. Dr. Ivan Shorstkii
Prof. Dr. Evgeny Sokolov
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

  • powder coatings
  • functional coatings
  • nanostructured coatings
  • biocompatible coatings
  • high-entropy alloy coatings
  • thermal spraying
  • PVD
  • sputtering targets
  • laser disposition of coatings
  • diffusion coatings
  • composite soldering
  • diamond-impregnated composites

Published Papers (3 papers)

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Research

10 pages, 6629 KiB  
Article
Structure Formation of Diamond-Containing Coatings during Sintering of Specially-Shaped Grinding Wheels
by Evgeny Sokolov, Alexander Ozolin and Dmitriy Golius
Coatings 2022, 12(3), 333; https://doi.org/10.3390/coatings12030333 - 3 Mar 2022
Cited by 2 | Viewed by 1584
Abstract
In this work, the structure formation of powder diamond-containing coatings with Sn-Cu-Co binders during sintering of specially-shaped grinding wheels has been studied. The kinetics of structure formation was studied using diamond-free metallic binders and diamond-containing samples. Powder components of the coatings were mixed [...] Read more.
In this work, the structure formation of powder diamond-containing coatings with Sn-Cu-Co binders during sintering of specially-shaped grinding wheels has been studied. The kinetics of structure formation was studied using diamond-free metallic binders and diamond-containing samples. Powder components of the coatings were mixed with an organic plasticizer and applied on steel workpieces by rolling. Sintering was performed in vacuum at 700–820 °C. The microstructure, phase composition, and distribution of elements in metallic binders and interface layers between the binders and steel base were studied. The morphology of the surface and structure of fractures of the diamond-containing samples have been examined. Stages of structure formation of the coatings during heating and sintering have been found. At 700–780 °C, diffusion of tin into copper particles plays the key role in the structure formation of the coatings. Dissolution-reprecipitation of cobalt at 780–820 °C has a significant effect on formation of the coating structure and interface layers between the coating and steel base. Full article
(This article belongs to the Special Issue Powder Composite Surfaces, Coatings and Films)
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11 pages, 6002 KiB  
Article
Hydrogen Isotope Permeation Behavior of AlCrFeTiNb, AlCrMoNbZr and AlCrFeMoTi High-Entropy Alloys Coatings
by Zhihao Hong, Long Wang, Wei Zhang, Jian Yang, Yongjin Feng, Jijun Yang, Haoxiang Li, Huaqiang Yin, Long Zhang and Xiaoyu Wang
Coatings 2022, 12(2), 171; https://doi.org/10.3390/coatings12020171 - 28 Jan 2022
Cited by 3 | Viewed by 2252
Abstract
The hydrogen permeation behavior of novel AlCrFeTiNb, AlCrMoNbZr and AlCrFeMoTi high-entropy alloy (HEA) coatings were investigated. The hydrogen permeability of HEA coatings prepared by magnetron sputtering technology were tested using gas-driven deuterium permeation and electrochemical hydrogen permeation methods. The gas-driven permeation results show [...] Read more.
The hydrogen permeation behavior of novel AlCrFeTiNb, AlCrMoNbZr and AlCrFeMoTi high-entropy alloy (HEA) coatings were investigated. The hydrogen permeability of HEA coatings prepared by magnetron sputtering technology were tested using gas-driven deuterium permeation and electrochemical hydrogen permeation methods. The gas-driven permeation results show that the deuterium permeation resistance of the AlCrFeTiNb coating is the worst because of the unstable structure at a high temperature. Scanning electron microscope (SEM) and X-ray Diffraction (XRD) analysis proved a loose surface morphology of the AlCrFeTiNb coating and demonstrated the formation of iron-based oxides after deuterium permeation experiments. A high content of iron in HEA coating is disadvantageous for improving the hydrogen permeability. Differently, electrochemical hydrogen permeation reveals that the AlCrMoNbZr coating could resist hydrogen permeation better in a corrosive environment (0.2 mol/L KOH solution). The AlCrFeMoTi coating was peeled off after an electrochemical hydrogen permeation test due to the poor corrosion resistance. The hydrogen behavior of HEA coatings was discussed in detail. Our study provides a promising thought on hydrogen permeation of HEA coatings. Full article
(This article belongs to the Special Issue Powder Composite Surfaces, Coatings and Films)
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10 pages, 6321 KiB  
Article
Microwave Absorption Properties of Fe3O4 Particles Coated with Al via Rotating Magnetic Field Method
by Ivan Shorstkii and Maxim Sosnin
Coatings 2021, 11(6), 621; https://doi.org/10.3390/coatings11060621 - 22 May 2021
Cited by 7 | Viewed by 2007
Abstract
Soft magnetic composites (SMCs) of Fe3O4 particles coated with Al nanoparticles were prepared using the rotating magnetic field method, and the microwave absorption properties and microstructures of these composites were investigated. The results show that a well-distributed Al nanoparticles coating [...] Read more.
Soft magnetic composites (SMCs) of Fe3O4 particles coated with Al nanoparticles were prepared using the rotating magnetic field method, and the microwave absorption properties and microstructures of these composites were investigated. The results show that a well-distributed Al nanoparticles coating layer was formed on the surface of the Fe3O4 particles upon mechanical friction and rotating magnetic field distribution. Scanning electron microscopy and X-ray diffraction XRD studies show that the rotating magnetic field method can produce a uniform coating of the aluminium layer on the Fe3O4 particles. Compared with common composites from Fe3O4 particles, SMCs of Fe3O4(Al) particles have stronger magnetic loss behaviour and weaker dielectric loss ability, as well as good reflection characteristics over a wide frequency range. The minimum reflection loss (RL) is −16.2 dB at 12.0 GHz for a corresponding thickness of 5 mm obtained for SMCs of Fe3O4(Al) particles. The presented rotating magnetic field method used in the Fe3O4 particles coating process with Al nanoparticles has great potential in composite materials synthesis with different morphology and areas of application. Full article
(This article belongs to the Special Issue Powder Composite Surfaces, Coatings and Films)
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