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Metals
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Tribological Behavior of Surface-Modified Metallic Components
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Tribological Behavior of Surface-Modified Metallic Components

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 4977

Special Issue Editor

Prof. Dr. Małgorzata Gra̧dzka-Dahlke

E-Mail Website
Guest Editor
Department of Materials and Production Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland
Interests: metallic alloys; high entropy alloys; biomaterials; porous materials; MMC; surface modification; tribology; biotribology

Special Issue Information

Dear Colleagues,

Surface layer modification of metallic materials in order to improve their performance has been known and used for decades in many different fields of engineering. Its application increases durability and reliability of elements of machines and tools as well as medical implants. As the technology, materials and analysis techniques progress, new methods of surface modification are also developed. The last word on the subject had not yet been had, as many scientific centers continue to conduct research in that field.

In many applications, modification of surface layer of metals is already a commercial standard. However, new solutions are constantly appearing in terms of materials, use of multilayer coatings, interlayers, methods of coating applications and additional surface processing. This allows for better adhesion to the substrate and increase in durability, particularly in special materials with low wear resistance or those working in demanding conditions.

The knowledge of tribological behavior and wear mechanisms of components with modified surface layers is continuously enhanced. The application of modern research techniques, imaging, and signal analysis allows for a better understanding of processes occurring during friction and for describing wear mechanisms of materials.

The key element in furthering these developments is maintaining communication, sharing experiences and constant exchange of knowledge and achievements.

This Special Issue aims to present the latest trends in new coatings for tribological use, advances in techniques of application and research as well as in-depth analysis of wear mechanisms. We are pleased to invite you to submit original, high-quality scientific articles, short communications, and state-of-the-art reviews for this Special Issue. Both theoretical and experimental contributions can be submitted.

Prof. Dr. Małgorzata Gra̧dzka-Dahlke
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. Metals 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
  • coatings
  • friction
  • tribological behavior
  • wear mechanism

Published Papers (2 papers)

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Research

16 pages, 10009 KiB  
Article
Duplex Aging and Gas Nitriding Process as a Method of Surface Modification of Titanium Alloys for Aircraft Applications
by Oleksandr Tisov, Magdalena Łępicka, Yurii Tsybrii, Alina Yurchuk, Myroslav Kindrachuk and Oleksandr Dukhota
Metals 2022, 12(1), 100; https://doi.org/10.3390/met12010100 - 5 Jan 2022
Cited by 2 | Viewed by 2673
Abstract
This study discusses the effect of a duplex aging + nitriding process on the wear resistance of an aged double-phase titanium alloy, BT22. Nitriding was applied simultaneously with the heat treatment of the alloy, which is advantageous over the conventional heat and surface [...] Read more.
This study discusses the effect of a duplex aging + nitriding process on the wear resistance of an aged double-phase titanium alloy, BT22. Nitriding was applied simultaneously with the heat treatment of the alloy, which is advantageous over the conventional heat and surface treatment methods applied to titanium alloys. According to the results, the thickness of the case depth of the nitrided samples was 40–50 μm. Moreover, nitrogen was uniformly dispersed in the substrate, which was indicated by the hardness tests. The average microhardness of the substrate material was 300 HV0.01, while the hardness of the top layer was 1190 HV0.01, which is an almost four-fold increase. The applied duplex treatment substantially affected the wear performance of the tested alloy. For the untreated alloy, the maximum coefficient of friction was 0.8, while in the surface-modified sample, the maximum fluctuations reached 0.6. The abrasive wear process was dominant in the nitrided samples, while delamination and adhesive wear were observed for the untreated specimens. The nitrided alloy exhibited double the wear resistance of the untreated samples. The proposed treatment does not require additional time or energy consumption, providing a substantial technological advantage over conventional methods. Though the alpha case reduces the mechanical performance of titanium, the nitriding of only the component sections intended to withstand friction will have a positive effect. Full article
(This article belongs to the Special Issue Tribological Behavior of Surface-Modified Metallic Components)
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13 pages, 4694 KiB  
Article
Wear Behaviour of N Ion Implanted Ti-6Al-4V Alloy Processed by Selective Laser Melting
by Hua Li, Zhan W. Chen, Holger Fiedler and Maziar Ramezani
Metals 2021, 11(10), 1639; https://doi.org/10.3390/met11101639 - 14 Oct 2021
Cited by 4 | Viewed by 1666
Abstract
Selective laser melting (SLM) is a laser-based powder bed fusion additive manufacturing technique extensively used in industry. One of the most commonly used alloys in SLM process is Ti-6Al-4V. However, its tribological properties when coated with N ion implantation is not well understood. [...] Read more.
Selective laser melting (SLM) is a laser-based powder bed fusion additive manufacturing technique extensively used in industry. One of the most commonly used alloys in SLM process is Ti-6Al-4V. However, its tribological properties when coated with N ion implantation is not well understood. In the ion implantation process used in this study, N2+ and N+ are accelerated to the energy of 60 keV and implanted to a fluence of 6 × 1017 at.cm−2. The effect of N ion implanted layer in terms of hardness values and how this implanted layer may affect wear process and wear rate is investigated in this paper. Sliding wear tests were conducted on SLM and conventionally processed samples implanted with N ions, followed by examining the wear tracks and coefficient of friction in order to explain the wear rate data obtained. The results showed that N+ implantation increased hardness within the depth of ~200 nm and reduced wear rate in SLM samples, while N2+ was not beneficial. Full article
(This article belongs to the Special Issue Tribological Behavior of Surface-Modified Metallic Components)
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