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Lubricants
Special Issues
Aerospace Tribology
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Aerospace Tribology

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

Deadline for manuscript submissions: 31 December 2024 | Viewed by 682

Special Issue Editors

Dr. Jimin Xu

E-Mail Website
Guest Editor
School of Mechanical Engineering, Hefei University of Technology, Hefei 23009, China
Interests: cryogenic tribology; bearings; mechanical seals; surface texturing; friction
Dr. Yulei Yang

E-Mail Website
Guest Editor
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: high-temperature tribology; bearings; coatings; fretting wear; surface engineering

Special Issue Information

Dear Colleagues,

Tribological components, mainly including bearings, seals, and blade tenon joints, play a crucial role in determining the reliability and service life of aerospace equipment, which have received broad attention from the engineering and academic communities. Due to the extreme working conditions in aerospace systems, such as high temperature, cryogenic environments, high speed, and heavy loads, it is very challenging to conduct aerospace tribological investigations and develop high-performance components. In recent years, surface texturing, special coatings, new frictional materials, and other advanced tribological techniques have been adopted in this field and achieved significant progresses.

This Special Issue aims to share the advances in tribological behaviors under typical extreme situations, high-performance aerospace tribological components, advanced tribometers for studying aerospace components, and other novel aspects in the field of Aerospace Tribology. It covers typical tribological components in aerospace equipment, materials, coatings, surface engineering, and tribological devices. Both experimental and theoretical investigations are highly welcome.

Dr. Jimin Xu
Dr. Yulei Yang
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

  • aerospace
  • bearings
  • seals
  • blade tenon joints
  • high temperature
  • cryogenic
  • extreme situations
  • coatings
  • surface texturing
  • tribometers

Published Papers (1 paper)

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Research

11 pages, 2879 KiB  
Article
Tribological Behavior of Polydiethylsiloxane (PDES) in a Si3N4 and M50 System under Low Temperatures from −80 to 25 °C
by Junhao Han, Yong Tang, Luo Yue, Xianzhen Ma, Hao Jia, Ningxia Liu, Pengpeng Bai, Yonggang Meng and Yu Tian
Lubricants 2024, 12(5), 176; https://doi.org/10.3390/lubricants12050176 - 14 May 2024
Viewed by 313
Abstract
Lubricants must exhibit good tribological behavior at low temperatures to ensure reliable startups in very cold regions. This study investigates the performance of lubricants, with a specific focus on their capacity for high-temperature lubrication and ensuring reliable low-temperature startup in engines. Experiments were [...] Read more.
Lubricants must exhibit good tribological behavior at low temperatures to ensure reliable startups in very cold regions. This study investigates the performance of lubricants, with a specific focus on their capacity for high-temperature lubrication and ensuring reliable low-temperature startup in engines. Experiments were conducted to assess the friction and wear characteristics of polydiethylsiloxane in conjunction with a Si3N4 ball and M50 (8Cr4Mo4V) steel across a temperature range of −80 °C to 25 °C. The results indicate that the coefficient of friction, as determined through friction and wear tests at various temperatures, remained below 0.1. As temperatures progressively decreased, the system’s friction coefficient increased, and wear volumes recorded at 25 °C and −60 °C were 9749.513 µm³ and 105.006 µm³, respectively, culminating in lubrication failure at −100 °C. This failure is primarily attributed to the increased viscosity and decreased mobility of polydiethylsiloxane at extremely low temperatures. Additionally, the reduced temperature increases the strength of the quenched steel, leading to hard particles or protrusions on the material’s surface, which collide with the Si3N4 ball during friction, causing adhesion and spalling. Despite this, polydiethylsiloxane forms a stable protective oil film on the surface, enhancing the system’s lubrication performance. However, below −80 °C, this oil film begins to tear, leading to diminished lubrication efficacy. This study provides valuable data supporting the field of cryogenic lubrication. Full article
(This article belongs to the Special Issue Aerospace Tribology)
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