Special Issue "Friction and Wear Behaviors in Mechanical Engineering"

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

Deadline for manuscript submissions: 31 October 2023 | Viewed by 1375

Special Issue Editors

Department of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, LT-53361 Kaunas, Lithuania
Interests: green tribology; biotribology; nanoparticles in lubricants; biodegradable oils; monitoring of tribosystems
Special Issues, Collections and Topics in MDPI journals
Department of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, LT-53361 Kaunas, Lithuania
Interests: friction- and wear-reducing coats; green tribology; biodegradable oils; nanoparticles in lubricants; self-regulation in tribosystems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work for the Special Issue “Friction and Wear Behaviours in Mechanical Engineering”. The friction and wear problems in mechanical systems have always been particularly important, but recently, with the worsening of energy problems, the relevance of these issues has increased even more. When solving this question, special attention should be focused on the systematicity of the solution, i.e., analysis of the entire tribological system. We invite articles that deal with the properties of friction surfaces; their change using various technological methods, both when forming coatings and applying other surface modification methods; and tribological system lubrication. We also seek articles dedicated to the loss of and increase in tribological system efficiency, mechanisms of surface wear and degradation, and the monitoring of tribological systems. The most important highlights of this publication are new and combined surface coating and processing methods; self-lubricating coatings; tribological properties of lubricants; their improvement and assessment of changes in properties during the operation; green, i.e., environmentally friendly technologies; and biodegradable lubricants. We welcome contributions that evaluate not only the friction and wear parameters of the tribological system, but also friction mechanisms, surface degradation processes, and environmentally friendly materials (i.e., bioscale and structural and lubricating materials made from renewable materials).

Most of the articles in the Special Issue will consist of published reports of the international conference BALTTRIB'2022 (www.balttrib.info).

The topics of interest include, but are not limited to, the following:

  • New and combined methods of coating formation and surface modification;
  • Influence of surface treatment on its wear and degradation mechanisms and intensity;
  • Structural and lubricating materials of biological origin;
  • Self-lubrication coatings and self-regulation processes in friction pairs;
  • Green surface treatment technologies;
  • Green tribology.

Prof. Dr. Juozas Padgurskas
Dr. Raimundas Rukuiža
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
  • tribosystem
  • friction and wear mechanisms
  • biolubricants
  • biodegradable materials
  • green tribology

Published Papers (2 papers)

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Research

Article
Analysis of the Distortion of the Bearing Rings after Quenching
Coatings 2023, 13(7), 1190; https://doi.org/10.3390/coatings13071190 - 02 Jul 2023
Viewed by 487
Abstract
Bearings are usually used at high-speed and high-load conditions, so the bearing sleeve must be able to withstand large contact stress, which requires heat treatment. However, during the quenching process of the bearing sleeve, a vapor film is formed on the surface. Since [...] Read more.
Bearings are usually used at high-speed and high-load conditions, so the bearing sleeve must be able to withstand large contact stress, which requires heat treatment. However, during the quenching process of the bearing sleeve, a vapor film is formed on the surface. Since the vapor film is not uniform along the axial direction during the process of boiling and breaking, it will cause uneven distortion of the bearing sleeve. This uneven distortion will cause the outer ring of the bearing to have elliptical distortion after heat treatment. However, the mechanism of this problem and how to reduce the elliptical distortion has not been completely solved. In this paper, two points on the inner wall and outer wall of the bearing sleeve in the orthogonal direction are measured by means of experiments, and the mechanism of the ellipticity distortion during the quenching process is revealed. Additionally, through its horizontal placement, oblique placement, and vertical placement, the cooling curve and cooling rate curve changes in the process of entering the quenching agent are studied; based on the cooling curve, the heat transfer coefficient of the bearing sleeve during quenching is obtained by the heat transfer equation. Input the heat transfer coefficient into the CAE heat treatment simulation software COSMAP, according to the Metallo-Thermo-Mechanics theory and the method of multi-field coupling, simulating the quenching process of GCr15 and 16MnCr5 materials. By comparison, the ellipticity value of the bearing placed at a 45° angle is smaller than that of the horizontally and vertically placed bearings, with the 16MnCr5 material having the smallest ellipticity value of 0.00016. The simulation results verified the distortion mechanism of the bearing sleeve during the quenching process and how to reduce the solution of elliptical distortion. Full article
(This article belongs to the Special Issue Friction and Wear Behaviors in Mechanical Engineering)
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Article
Applicability Analysis of Nickel Steel Plate Friction Coefficient Model Based on Fractal Theory
Coatings 2023, 13(6), 1096; https://doi.org/10.3390/coatings13061096 - 13 Jun 2023
Viewed by 536
Abstract
In the field of aerospace, weapons and other complex assembly, there are more than 50 factors affecting the performance degradation of joint structures, among which the friction coefficient is the main factor. Nickel steel is widely used in large complex equipment due to [...] Read more.
In the field of aerospace, weapons and other complex assembly, there are more than 50 factors affecting the performance degradation of joint structures, among which the friction coefficient is the main factor. Nickel steel is widely used in large complex equipment due to its advantages of high strength. Therefore, this paper first establishes a theoretical model of friction coefficient based on fractal theory. Secondly, the friction coefficient experiment was carried out to measure the friction coefficient of nickel steel plates with different roughness under different normal loads. Finally, the experimental results are compared with the theoretical results, and the accuracy and error analysis of the model is carried out. The results show that the friction coefficient increases with the increase in roughness. When the normal load is greater than 50 kg, the friction coefficient gradually tends to be stable. The error of identification results of correction factor a was all within 5%. The error between theoretical model prediction and experimental data is 6%–15%, which indicates that the calculation of the friction coefficient has high accuracy. The results of this study can provide data and theoretical support for the friction coefficient evaluation of nickel steel plate joint structures, and contribute to the health detection and reliability evaluation of nickel steel plate joint structures. Full article
(This article belongs to the Special Issue Friction and Wear Behaviors in Mechanical Engineering)
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