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Study of Interfacial Tribology and Friction
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Study of Interfacial Tribology and Friction

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 785

Special Issue Editor

Dr. Giovanna Gautier Di Confiengo

E-Mail Website
Guest Editor
Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS), National Research Council, 10135 Torino, Italy
Interests: tribology; surface science

Special Issue Information

Dear Colleagues,

The aim of this Special Issue is to improve the fundamental knowledge about the nature of wear materials. The research interests cover the research and development of materials, coatings, or surface treatments, focusing on the relationship between composition, structure, and their wear behaviour.

Dr. Giovanna Gautier Di Confiengo
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. Materials is an international peer-reviewed open access semimonthly 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

  • wear mechanism
  • tribology
  • lubrication
  • friction

Published Papers (1 paper)

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Research

16 pages, 2371 KiB  
Article
Friction Reduction Achieved by Ultraviolet Illumination on TiO2 Surface
by Xiao Sang, Ke Han, Manfu Zhu and Liran Ma
Materials 2024, 17(7), 1680; https://doi.org/10.3390/ma17071680 - 06 Apr 2024
Viewed by 576
Abstract
Controlling friction by light field is a low-cost, low-energy, non-polluting method. By applying ultraviolet light on the surface of photosensitive materials, the properties of the friction pairs or lubricant can be influenced, thus achieving the purpose of reducing friction. In this study, TiO [...] Read more.
Controlling friction by light field is a low-cost, low-energy, non-polluting method. By applying ultraviolet light on the surface of photosensitive materials, the properties of the friction pairs or lubricant can be influenced, thus achieving the purpose of reducing friction. In this study, TiO2, an inorganic photosensitive material, was selected to investigate the modulating effect of light fields on friction lubrication when using polyalphaolefin (PAO) base oil as a lubricant, and the modulation law of light fields on the friction lubrication behavior was investigated under different loads (1–8 N), different speeds (20–380 mm/s), and different viscosities (10.1–108.6 mPa·s) of PAO base oil. The experimental results showed that light treatment could reduce the friction coefficient of PAO4 base oil lubrication from 0.034 to 0.016, with a reduction of 52.9% under conditions of 3 N-load and 56.5 mm/s-speed, and the best regulation effect could be achieved under the mixed lubrication condition. After TiO2 was treated with ultraviolet light, due to its photocatalytic property, PAO molecules were oxidized and adsorbed on the TiO2 surface to form an adsorption layer, which avoided the direct contact of rough peaks and thus reduced the friction coefficient. This study combines photosensitivity, photocatalysis, and friction, presenting a method to reduce the friction coefficient by applying a light field without changing the friction pairs or lubricants, which provides a new direction for friction modulation and gives new ideas for practical applications. Full article
(This article belongs to the Special Issue Study of Interfacial Tribology and Friction)
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