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Coatings
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Surface Engineering and Tribology
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Surface Engineering and Tribology

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 13590

Special Issue Editor

Dr. Bauyrzhan Rakhadilov

E-Mail Website
Guest Editor
Research Center Surface Engineering and Tribology, Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk 070000, Kazakhstan
Interests: electrolyte-plasma modification of materials; production of functional-gradient coatings; study of surface-plasma interactions

Special Issue Information

Dear Colleagues,

Coating and surface modification are in many cases the best ways to deal with the tribological damage of a part. By following a surface engineering approach, it is possible to obtain hard, wear- and corrosion-resistant coatings or surface layers and delegate the role of resisting tribological loads to the coatings and modified surfaces. In most cases, the selection of an appropriate surface treatment results in cost savings, as it allows the use of cheaper base materials.

The aim of this Special Issue is to bring together the latest advances in surface engineering and tribology, covering the development of modification and coating technology; tribological, mechanical and corrosive characterization; and industrial applications.

Original research and review articles are encouraged in this Special Issue. Potential topics include:

  • Coatings;
  • Surface modification;
  • Surface engineering;
  • Tribology;
  • Friction;
  • Wear;
  • Corrosion;
  • Contact mechanics.

Dr. Bauyrzhan Rakhadilov
Guest Editor

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

  • coatings
  • surface modification
  • surface engineering
  • tribology
  • friction
  • wear
  • corrosion
  • contact mechanics

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (6 papers)

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Research

15 pages, 3872 KiB  
Article
Investigation of Changes in the Structural-Phase State and the Efficiency of Hardening of 30CrMnSiA Steel by the Method of Electrolytic Plasma Thermocyclic Surface Treatment
by Daryn Baizhan, Bauyrzhan Rakhadilov, Laila Zhurerova, Yuri Tyurin, Zhuldyz Sagdoldina, Meruyert Adilkanova and Rauan Kozhanova
Coatings 2022, 12(11), 1696; https://doi.org/10.3390/coatings12111696 - 7 Nov 2022
Cited by 7 | Viewed by 1847
Abstract
Electrolytic plasma thermocyclic surface hardening is an attractive solution for both chemical and heat treatment used to improve the properties of the steel surface by structural and phase transformation. Structural and phase transformations occurring during the process of electrolytic plasma thermocyclic hardening are [...] Read more.
Electrolytic plasma thermocyclic surface hardening is an attractive solution for both chemical and heat treatment used to improve the properties of the steel surface by structural and phase transformation. Structural and phase transformations occurring during the process of electrolytic plasma thermocyclic hardening are performed repeatedly at varying heating–cooling temperatures, which radically improve the quality of the part and give them properties unattainable by means of one-time processing. The impact of electrolytic plasma thermocyclic hardening modes on the structure and mechanical and tribological properties of 30CrMnSiA steel is investigated. The structural and phase components were examined using optical and scanning electron microscopy, as well as X-ray phase analysis. It is established that the structure of the cross-section is characterized by the following zonality: zone 1—a near-surface hardened zone, which is composed of hardened martensite; zone 2—thermal influence; and zone 3—a matrix consisting of pearlite and ferrite. The microhardness and wear resistance of the hardened surface were evaluated by nanoindentation and “ball on disk” methods, respectively. Nanoindentation analysis demonstrated that the indentation hardening process provides a maximum increase in hardness by three times and an increase in stiffness with a decrease in the elastic modulus by 38% compared to the original steel. The results of tribological studies show that electrolytic plasma thermocyclic hardening increases the resistance of steel to friction by increasing the surface hardness and reduces the area of actual contact during friction. It is established that the microhardness of the cross-section decreases proportionally from the surface to the depth of the layer, which is associated with a decrease in the volume content of martensite. Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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12 pages, 4045 KiB  
Article
Improving the Efficiency of Air Plasma Spraying of Titanium Nitride Powder
by Aidar Kengesbekov, Bauyrzhan Rakhadilov, Zhuldyz Sagdoldina, Dastan Buitkenov, Yelmurat Dosymov and Manarbek Kylyshkanov
Coatings 2022, 12(11), 1644; https://doi.org/10.3390/coatings12111644 - 30 Oct 2022
Cited by 13 | Viewed by 1946
Abstract
The operation modes of a plasmatron for powder coating spraying have been studied. The plasmatron has a node of annular input and a gasdynamic focusing of the powder, and the outlet holes of the nozzle-anode are made in the form of rectangular narrowing-expanding [...] Read more.
The operation modes of a plasmatron for powder coating spraying have been studied. The plasmatron has a node of annular input and a gasdynamic focusing of the powder, and the outlet holes of the nozzle-anode are made in the form of rectangular narrowing-expanding channels (No.34334 RK: IPC H05H 1/42). The dynamics and trajectories of the powder particles in the plasmatron were investigated. The paper analyzes the influence of plasmatron arc current and working gas flow rate on the structure and properties of the obtained coatings. It is established that the phase composition of the sprayed coatings and the initial powder is the same: the main phase is the compound TiN, in addition, the structure contains the phase TiO2. The results of tribological tests of the coatings under dry friction conditions according to the ball-on-disk scheme are presented. Within the framework of this study, it can be said, from the point of view of obtaining denser coatings with high performance characteristics, that the optimal modes of plasma spraying of TiN powder are a current of 250 A and the working gas flow rate of argon 34 L/min. Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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11 pages, 3244 KiB  
Article
Synthesis and Formation Mechanism of Metal Oxide Compounds
by Aidar Kengesbekov, Zhuldyz Sagdoldina, Kyztore Torebek, Daryn Baizhan, Yedilzhan Kambarov, Michael Yermolenko, Saule Abdulina and Meruyert Maulet
Coatings 2022, 12(10), 1511; https://doi.org/10.3390/coatings12101511 - 9 Oct 2022
Cited by 7 | Viewed by 1838
Abstract
In this work, the influence of the technological parameters of the detonation method on the formation of metal oxide compounds on the basis of titanium was investigated. The aim of the work was to investigate the method of the effective control of the [...] Read more.
In this work, the influence of the technological parameters of the detonation method on the formation of metal oxide compounds on the basis of titanium was investigated. The aim of the work was to investigate the method of the effective control of the phase composition and microstructure of titanium-based coatings during detonation spraying. The main parameters that varied in detonation spraying were the volume of filling the detonation barrel with explosive mixture and the oxygen/fuel ratio. The mechanism of formation of the gradient structure of coatings based on metal oxide compounds depending on the technological parameters of detonation spraying was considered. The structural-phase states and tribological properties of detonation coatings were investigated by the following methods: X-ray phase analysis (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX-mapping), profilometry, and the test for wear-resistance according to the “ball-disk” scheme. It is shown that the phase composition of coatings may significantly change relative to the initial titanium powder during the detonation spraying due to the interaction of particles of powders with components of the gas atmosphere. Varying the spraying parameters may control the chemical reaction and provide conditions for the synthesis of the desired phases in the coatings (titanium oxide TiO2 and Ti2O3). Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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13 pages, 5983 KiB  
Article
Research on the Friction and Wear Properties of Dents Textured Rolling Element Bearings under Dry Wear
by Shaoni Sun, Risheng Long, Zhihao Jin, Yimin Zhang, Zichen Ju and Xuanying Du
Coatings 2022, 12(5), 684; https://doi.org/10.3390/coatings12050684 - 16 May 2022
Cited by 10 | Viewed by 1980
Abstract
To explore the effect of dents on the tribological behavior of the “washers-cage-rollers” system of rolling element bearings (REBs), the friction and wear properties of dents textured thrust cylindrical roller bearings (81107TN) with different diameters of dents (DAOD, 200, 250, 300 μm), depth [...] Read more.
To explore the effect of dents on the tribological behavior of the “washers-cage-rollers” system of rolling element bearings (REBs), the friction and wear properties of dents textured thrust cylindrical roller bearings (81107TN) with different diameters of dents (DAOD, 200, 250, 300 μm), depth of dents (DPOD, 4, 8, 12 μm) as well as circumferential interval angle (CFIA, 1.5°, 2.0°, 2.5°) were researched under dry wear. The surface stresses of REBs and the influence mechanism of dents were also compared and discussed. The results show that: due to the nylon film formed and left on the raceways, the coefficients of friction (COFs) of dents textured bearings are all higher than the average COF of smooth ones, while their wear losses may become higher or lower, depending on the combination of pattern parameters. The influence of the DPOD on the tribological performance of textured bearings is more significant than that of the DAOD. The results show that, when the DAOD and DPOD are 250 and 8 μm, respectively, compared with the smooth ones, the mass losses of bearings can be reduced by up to 49.22% under dry wear, which would be an important reference for the optimal design of the “washers-cage-rollers” system of REBs. Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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15 pages, 3482 KiB  
Article
Comparative Study of Tribological and Corrosion Characteristics of TiCN, TiCrCN, and TiZrCN Coatings
by Aidar Kenzhegulov, Axaule Mamaeva, Aleksandr Panichkin, Zhasulan Alibekov, Balzhan Kshibekova, Nauryzbek Bakhytuly and Wojciech Wieleba
Coatings 2022, 12(5), 564; https://doi.org/10.3390/coatings12050564 - 21 Apr 2022
Cited by 12 | Viewed by 2592
Abstract
Coatings based on titanium carbonitride alloyed with zirconium and chromium were deposited using the method of reactive magnetron sputtering on the surface of titanium VT1–0. The effect of alloying titanium carbonitride with zirconium and chromium on the tribo- and corrosion properties of the [...] Read more.
Coatings based on titanium carbonitride alloyed with zirconium and chromium were deposited using the method of reactive magnetron sputtering on the surface of titanium VT1–0. The effect of alloying titanium carbonitride with zirconium and chromium on the tribo- and corrosion properties of the coating has been studied. Coatings with different compositions were formed by changing the ratio of alloying elements to titanium in a single target. To study the obtained coatings, a scanning electron microscopy, nanoindentation, sliding wear test (ball on disk method), and corrosion tests in 0.5 M Na2SO4 and 30% NaCl solution were used. As a result of wear and corrosion tests, friction coefficients, mass index, and corrosion rate of alloyed and pure titanium carbonitride coatings were obtained. The average coefficient of friction of the coatings varied in the range of 0.17–0.31. The values of nanohardness are determined depending on the composition of the coatings. From corrosion data, it is determined that TiCrCN and TiZrCN coatings exhibit better corrosion properties compared to TiCN coatings. As a result of the dependences obtained, the preferred composition of the coating, the most resistant to wear and corrosion damage, was revealed. Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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11 pages, 3144 KiB  
Article
Effect of Magnetron Sputtering Deposition Conditions on the Mechanical and Tribological Properties of Wear-Resistant Titanium Carbonitride Coatings
by Axaule Mamaeva, Aidar Kenzhegulov, Aleksandr Panichkin, Zhasulan Alibekov and Wojciech Wieleba
Coatings 2022, 12(2), 193; https://doi.org/10.3390/coatings12020193 - 2 Feb 2022
Cited by 12 | Viewed by 2562
Abstract
In the present work, the titanium carbonitride coatings were deposited by the reactive magnetron sputtering method at different substrate bias: 0, −70 V, and −100 V. The effect of the substrate bias on the structure, composition, and mechanical and tribological properties of titanium [...] Read more.
In the present work, the titanium carbonitride coatings were deposited by the reactive magnetron sputtering method at different substrate bias: 0, −70 V, and −100 V. The effect of the substrate bias on the structure, composition, and mechanical and tribological properties of titanium carbonitride coatings was studied. Scanning electron microscopy, nanoindentation, sliding wear test (ball-on-disk method), X-ray phase, and elemental analysis methods were used to evaluate the tribological properties and microstructure of the thin coatings. The dependencies obtained resulted in the determination of the most preferred mode of deposition by magnetron sputtering at a negative substrate bias in an atmosphere of argon–acetylene–nitrogen. Full article
(This article belongs to the Special Issue Surface Engineering and Tribology)
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