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Effects of Surface Layer Modification on Fatigue, Corrosion and Wear...
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Effects of Surface Layer Modification on Fatigue, Corrosion and Wear Behavior of Metallic Materials

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

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1439

Special Issue Editors

Prof. Dr. Jordan Todorov Maximov

E-Mail Website
Guest Editor
Material Science and Mechanics of Materials, Technical University of Gabrovo, 5300 Gabrovo, Bulgaria
Interests: mechanics of materials; surface engineering; surface integrity; fatigue strength improvement; wear resistance improvement; surface coldworking
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Galya Velikova Duncheva

E-Mail Website
Guest Editor
Material Science and Mechanics of Materials, Technical University of Gabrovo, 5300 Gabrovo, Bulgaria
Interests: mechanics of materials; surface engineering; surface integrity; fatigue strength improvement; wear resistance improvement; surface coldworking; process optimization; finite element simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The surface layers (SL) of structural and machine elements are their outermost layers, and therefore, are the physical boundary interacting with other elements and/or the environment. In the process of operation, SLs are the most loaded. Working stresses are maximized; as a result, fatigue micro-cracks appear and develop and are, often aggressively, subjected to intense wear and the direct impact of the environment. Because of the defining role of SL in the operation process and their different physical–mechanical state compared to that of the bulk material, the idea of modifying only the surface layers and not the entire component is many times more effective. This special issue focuses on the effects of surface layer modification on the fatigue, corrosion and wear behavior of metallic materials.

Potential topics include the following:

  • Synthesis of new and development and research of existing techniques for modifying the surface layers of metal components by:
    • Creating a barrier or other protection (coatings such as PVD, CVD, thermal spraying, etc.; thin film deposition);
    • Surface treatments (cold working such as burnishing, shot peening, etc.; thermo-chemical diffusion; electron beam/laser hardening);
    • Combined (sequential application of known techniques) and hybrid (simultaneous application of known techniques) processes aimed at achieving a synergistic effect.
  • Correlations between surface modification techniques and surface integrity of the components.
  • Correlations between surface modification techniques and operating behaviour (fatigue, corrosion and wear) of the components.
  • Correlations between surface integrity and operating behaviour.

Prof. Dr. Jordan Todorov Maximov
Prof. Dr. Galya Velikova Duncheva
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

  • surface modification
  • fatigue behaviour
  • corrosion resistance
  • wear resistance
  • surface integrity
  • surface cold working
  • burnishing
  • coatings
  • thermo-chemical diffusion
  • electron-beam/laser surface hardening

Published Papers (2 papers)

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Research

13 pages, 4748 KiB  
Article
Influence of Thickness on the Structure and Biological Response of Cu-O Coatings Deposited on cpTi
by Ivana Ilievska, Veronika Ivanova, Dimitar Dechev, Nikolay Ivanov, Maria Ormanova, Maria P. Nikolova, Yordan Handzhiyski, Andreana Andreeva, Stefan Valkov and Margarita D. Apostolova
Coatings 2024, 14(4), 455; https://doi.org/10.3390/coatings14040455 - 10 Apr 2024
Viewed by 464
Abstract
This work presents results on the influence of thickness on the structure and biological response of Cu-O coatings deposited on commercially pure titanium (cpTi) substrates using direct current (DC) magnetron sputtering. The deposition times were 5, 10, and 15 min to obtain coatings [...] Read more.
This work presents results on the influence of thickness on the structure and biological response of Cu-O coatings deposited on commercially pure titanium (cpTi) substrates using direct current (DC) magnetron sputtering. The deposition times were 5, 10, and 15 min to obtain coatings with different thicknesses. The results show that the films deposited for 5, 10, and 15 min correspond to thicknesses of 41, 74, and 125 nm, respectively. The phase composition of the coatings is in the form of a double-phase structure of CuO and Cu2O in all considered cases. The roughness is on the nanometric scale and no obvious trend as a function of the thickness can be observed for the deposited films. Also, it was found that, with an increase in the thickness of the films, the distribution of the heights becomes closer to symmetrical. The antimicrobial efficacy of different Cu-O-coated cpTi substrates was examined using a direct contact experiment. A possible bactericidal effect was investigated by inoculating a 200 μL bacterial suspension on CuO-coated cpTi and cpTi (control) for 24 h at 37 °C. The results showed that Cu-O-coated cpTi substrates have a 50%–60% higher antimicrobial activity than the substrate. At the same time, human osteosarcoma (MG-63) cells growing on Cu-O-coated cpTi substrates showed 80% viability following 24 h incubation. Depending on magnetron sputtering process parameters, a different coating thickness, various crystallite phase compositions, and diverse biocompatibility were obtained. Full article
(This article belongs to the Special Issue Effects of Surface Layer Modification on Fatigue, Corrosion and Wear Behavior of Metallic Materials)
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13 pages, 4344 KiB  
Article
Effect of Process Parameters on the Microstructure and Wear Resistance of Fe3Al/Cr3C2 Composites
by Yaohui Wang, Yingkai Feng, Xiaohu Sun, Shaoquan Liu and Guoqiang Chen
Coatings 2024, 14(4), 384; https://doi.org/10.3390/coatings14040384 - 25 Mar 2024
Viewed by 618
Abstract
In this paper, a brake cylinder coating comprising a composite material of an Fe3Al and Cr3C2 mixed powder was prepared by adding laser cladding onto carbon structural steel. We studied the influence of process parameters on the microstructure [...] Read more.
In this paper, a brake cylinder coating comprising a composite material of an Fe3Al and Cr3C2 mixed powder was prepared by adding laser cladding onto carbon structural steel. We studied the influence of process parameters on the microstructure and tribological properties of the cladding materials using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and 3D white light interferometer and wear tests. The influence of different processes on the morphology of the carbide strengthening phase was found to be relatively small with a Cr3C2 content of 15 wt.%. The carbides mainly exhibited a network structure in each group of cladding layers. The area of the network strengthening phase varied under different processes. Of the cladding layers formed with different processes, the scanning speed of the 0.003 m/s cladding layer had the lowest wear rate. When the laser power was too low or the powder feed rate was too high, unmelted Cr3C2 particles could be found in the cladding layer. During the wear process, the particles peeled off, causing severe abrasive wear. When the powder feeding rate was too low, more materials in the base material entered the cladding layer. This made the composition of the cladding layer similar to that of the grinding material, resulting in severe adhesive wear. Full article
(This article belongs to the Special Issue Effects of Surface Layer Modification on Fatigue, Corrosion and Wear Behavior of Metallic Materials)
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