Materials

Journal Browser

► Journal Browser

Special Issue Information

Dear Colleagues,

It is an honor and privilege to be involved as the guest editor of a Special Issue of Materials focusing on the friction and wear of material surfaces. I believe that with your kind support, it will become an important Special Issue, as the first edition collected over 30 articles.

Tribology plays a crucial role in industry by improving the efficiency, reliability, performance, energy efficiency, safety, and sustainability of many products and systems. Tribological research also plays an important role in improving the design, manufacturing, and operation of many industrial products and systems. This can lead to significant cost savings by reducing maintenance, repair, and replacement costs.

A number of scientists studied the effect of surface topography and material properties on the tribological performance of sliding elements. However, accessible papers contain ambiguous and sometimes contradictory opinions about connections between values of surface topography parameters, materials properties and various tribological properties of sliding pairs. In addition, a continuous development of measuring equipment makes more precision measurements possible and as a consequence also makes extended analysis of phenomena taking part on surfaces in frictional contact possible.

Therefore, the aim of this Special Issue is to collect high-quality research papers that focus on the friction and wear of material surfaces. We are looking forward to receiving your submissions.

Dr. Andrzej Dzierwa
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

tribology
friction
wear
lubrication
materials
surface engineering
surface topography
surface metrology
manufacturing processes

Published Papers (2 papers)

Download All Papers

Research

Jump to: Review

23 pages, 44324 KiB

Open AccessArticle

Microstructure and Wear Behavior of Ti-xFe-SiC In Situ Composite Ceramic Coatings on TC4 Substrate from Laser Cladding

by Xiaojun Zhao, Peize Lyu, Shenqin Fang, Shaohao Li, Xiaoxuan Tu, Penghe Ren, Dian Liu, Lyuming Chen, Lairong Xiao and Sainan Liu

Materials 2024, 17(1), 100; https://0-doi-org.brum.beds.ac.uk/10.3390/ma17010100 - 24 Dec 2023

Cited by 4 | Viewed by 721

Abstract

Titanium alloys are widely used in various structural materials due to their lightweight properties. However, the low wear resistance causes significant economic losses every year. Therefore, it is necessary to implement wear-resistant protection on the surface of titanium alloys. In this study, four types of in situ composite ceramic coatings with two-layer gradient structures were prepared on a Ti-6Al-4V (TC4) substrate using laser cladding. In order to reduce the dilution rate, a transition layer (Ti-40SiC (vol.%)) was first prepared on TC4 alloy. Then, a high-volume-fraction in situ composite ceramic working layer (Ti-xFe-80SiC (vol.%)) with different contents of Fe-based alloy powder (x = 0, 5, 10 and 15 vol.%) was prepared. The working surface of Ti-40SiC (TL) exhibited a typical XRD pattern of Ti, TiC, Ti₅Si₃, and Ti₃SiC₂. In comparison, both Ti-80SiC (WL-F0) and Ti-5Fe-80SiC (WL-F5) exhibited similar phase compositions to the TL coating, with no new phase identified in the coatings. However, the TiFeSi₂ and SiC phases were presented in Ti-10Fe-80SiC (WL-F10) and Ti-15Fe-80SiC (WL-F15). It is proven that the addition of the Fe element could regulate the in situ reaction in the original Ti-Si-C ternary system to form the new phases with high hardness and good wear resistance. The hardness of the WL-F15 (1842.9 HV₁) is five times higher than that of the matrix (350 HV₁). Due to the existence of self-lubricating phases such as Ti₅Si₃ and Ti₃SiC₂, a lubricating film was presented in the WL-F0 and WL-F5 coatings, which could block the further damage of the friction pair and enhance the wear resistance. Furthermore, a wear-transition phenomenon was observed in the WL-F10 and WL-F15 coatings, which was similar to the friction behavior of structural ceramics. Under the load of 10 N and 20 N, the wear volume of WL-F15 coating is 5.2% and 63.7% of that in the substrate, and the depth of friction of WL-15 coating is only 14.4% and 80% of that in the substrate. The transition of wear volume and depth can be attributed to the wear mechanism changing from oxidation wear to adhesive wear. Full article

(This article belongs to the Special Issue Friction and Wear of Materials Surfaces (2nd Edition))

► Show Figures

Figure 1

Review

Jump to: Research

27 pages, 1538 KiB

Open AccessReview

Superlubricity of Materials: Progress, Potential, and Challenges

by Maziar Ramezani, Zaidi Mohd Ripin, Cho-Pei Jiang and Tim Pasang

Materials 2023, 16(14), 5145; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16145145 - 21 Jul 2023

Cited by 4 | Viewed by 1554

Abstract

This review paper provides a comprehensive overview of the phenomenon of superlubricity, its associated material characteristics, and its potential applications. Superlubricity, the state of near-zero friction between two surfaces, presents significant potential for enhancing the efficiency of mechanical systems, thus attracting significant attention in both academic and industrial realms. We explore the atomic/molecular structures that enable this characteristic and discuss notable superlubric materials, including graphite, diamond-like carbon, and advanced engineering composites. The review further elaborates on the methods of achieving superlubricity at both nanoscale and macroscale levels, highlighting the influence of environmental conditions. We also discuss superlubricity’s applications, ranging from mechanical systems to energy conservation and biomedical applications. Despite the promising potential, the realization of superlubricity is laden with challenges. We address these technical difficulties, specifically those related to achieving and maintaining superlubricity, and the issues encountered in scaling up for industrial applications. The paper also underscores the sustainability concerns associated with superlubricity and proposes potential solutions. We conclude with a discussion of the possible future research directions and the impact of technological innovations in this field. This review thus provides a valuable resource for researchers and industry professionals engaged in the development and application of superlubric materials. Full article

(This article belongs to the Special Issue Friction and Wear of Materials Surfaces (2nd Edition))

► Show Figures