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Lubricants
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Friction and Wear of Ceramics
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Friction and Wear of Ceramics

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: 31 July 2024 | Viewed by 1110

Special Issue Editors

Prof. Dr. Yanchun Zhou

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Guest Editor
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
Interests: ceramics; ultra-high temperature ceramics; thermal insulating materials; composites; friction; wear
Prof. Dr. Yongsheng Zhang

E-Mail Website
Guest Editor
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: ceramics (amorphous alloys, ceramic/metal composite components) lubricating wear-resistant; in-situ integrated connection technology of ceramics and metals; life prediction and control theory of composite materials (ceramic/metal composite components) under extreme service environments
Dr. Hengzhong Fan

E-Mail Website
Guest Editor
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: ceramics; lubrication sealing materials; surface technology and protection; ultra-high temperature lubrication

Special Issue Information

Dear Colleague,

Ceramics are the materials of choice as surface coatings or bulks in harsh environments due to their unique combination of good high temperature stability, high hardness and strength, light weight, and excellent corrosion resistance. The relatively high coefficients of friction and wear rates, however, have impeded their practical applications as mechanical moving parts. To overcome these obstacles, a fundamental understanding of the friction and wear behavior and failure mechanisms and vigorous efforts to develop ceramic-based lubricants have become important. As such, this Special Issue will provide a platform for scientists and engineers to present their recent achievements in tribological properties of ceramics and ceramic matrix composites, new ceramic-based lubricants and new material design paradigms. Papers on the design, fraction and wear, and lubricating properties of high-entropy ceramics, films and coatings are welcome. We expect that major developments are pursued to tackle the challenges in harsh environment lubrication.

Prof. Dr. Yanchun Zhou
Prof. Dr. Yongsheng Zhang
Dr. Hengzhong Fan
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. Lubricants 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

  • ceramics
  • ultra-high temperature ceramics
  • composites
  • friction
  • tribology
  • lubrication

Published Papers (2 papers)

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Research

16 pages, 9655 KiB  
Article
Research on the Preparation of Zirconia Coating on Titanium Alloy Surface and Its Tribological Properties
by Qiancheng Zhao, Li Wang, Tianchang Hu, Junjie Song, Yunfeng Su and Litian Hu
Lubricants 2024, 12(5), 154; https://doi.org/10.3390/lubricants12050154 - 28 Apr 2024
Viewed by 264
Abstract
Titanium alloys have been widely used in aerospace and other fields due to their excellent properties such as light weight and high strength. However, the extremely poor tribological properties of titanium alloys limit their applications in certain special working conditions. In order to [...] Read more.
Titanium alloys have been widely used in aerospace and other fields due to their excellent properties such as light weight and high strength. However, the extremely poor tribological properties of titanium alloys limit their applications in certain special working conditions. In order to improve the tribological properties of titanium alloys, the zirconia coatings were prepared on the surface of a TC4 titanium alloy using the discharge plasma sintering method in this article. The influence of sintering parameters on properties such as density, adhesion, hardness, and phase composition, as well as tribological properties (friction coefficient, wear rate) were investigated, and the influence mechanism of the coating structure on its mechanical and frictional properties was analyzed. The results showed that, with the increase in sintering temperature, the density, bonding strength, and hardness of the zirconia coating were significantly improved. The zirconia coating prepared at a sintering temperature of 1500 °C and a sintering time of 20 min had the lowest friction coefficient and wear rate, which are 0.33 and 6.2 × 10−8 cm3·N−1·m−1, respectively. Numerical analysis showed that the increase in temperature and the extension of time contributed to the extension of the diffusion distance between zirconia and titanium, thereby improving the interfacial adhesion. The influence mechanism of different sintering temperatures and sintering times on the wear performance of zirconia coatings was explained through Hertz contact theory. Full article
(This article belongs to the Special Issue Friction and Wear of Ceramics)
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12 pages, 16991 KiB  
Article
Tribological Properties of the Fast Ceramic Conversion Treated Ti-6Al-2Sn-4Zr-2Mo Alloy with a Pre-Deposited Gold Layer
by Zhenxue Zhang, Yue Xiao, Chen Liu and Hanshan Dong
Lubricants 2024, 12(4), 105; https://doi.org/10.3390/lubricants12040105 - 23 Mar 2024
Viewed by 685
Abstract
Ceramic conversion treatment (CCT) is an effective way to modify the surface of titanium alloys. However, this process normally needs more than a 100-h treatment at 600–700 °C to form a hard and wear-resistant titanium oxide layer. In this paper, we pre-deposited a [...] Read more.
Ceramic conversion treatment (CCT) is an effective way to modify the surface of titanium alloys. However, this process normally needs more than a 100-h treatment at 600–700 °C to form a hard and wear-resistant titanium oxide layer. In this paper, we pre-deposited a thin gold layer on the surface of Ti-6Al-2Sn-4Zr-2Mo (Ti6242) samples before CCT to investigate if Au can speed up the treatment. Treatments at 640/670/700 °C were carried out for 10 or 120 h. After CCT, the surface roughness, surface morphology, microstructure, elemental composition, and phase constituents were characterized. Surface hardness and the nano-hardness depth distribution were measured. Finally, reciprocating sliding tribological tests were carried out to study the friction and wear of the surface layers. Thin gold layers accelerated the CCT significantly with a much thicker oxide layer. The friction of the untreated Ti6242 alloy against the WC ball was unsteady and high, but it was much lower and stable for the CCTed samples pre-deposited with Au because of the formation of titanium oxides and lubrication effect of the gold particles. The wear resistance of the CCTed Ti6242 alloy samples with gold was reinforced significantly. By pre-depositing a thin gold layer on the surface of Ti6242, the treatment time can be cut significantly, and CCT becomes more efficient. Full article
(This article belongs to the Special Issue Friction and Wear of Ceramics)
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