Wear-Resistant Coatings and Film Materials

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

Deadline for manuscript submissions: 30 June 2024 | Viewed by 2024

Special Issue Editors


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Guest Editor
School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Interests: nanolubricants; structure of surface/interface

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Guest Editor
School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 100096, China
Interests: solid lubrication; friction reduction; diamond-like carbon (DLC) film

Special Issue Information

Dear Colleagues,

Wear-resistant coatings and film materials are essential in many industries, such as manufacturing and aerospace. These coatings and materials provide protection against wear and tear, extending the lifespan and durability of various products.

One of the key benefits of wear-resistant coatings, such as nanomaterials and polyurethane, is their ability to reduce friction. These coatings are commonly used in applications such as bearings. Another advantage of wear-resistant coatings is their ability to resist chemical and environmental degradation. This extends their lifespan and reduces the maintenance costs in harsh environments. Moreover, wear-resistant coatings can also enhance the aesthetic appeal of products with different colors or textures. This is particularly important in automotive and consumer electronics, where design plays a crucial role in customers’ perception. Despite the numerous benefits of wear-resistant coatings, there are also challenges and limitations.

The theme of this Special Issue aims to promote exchange and collaboration within the academic community to explore the latest research findings and future directions in this field. We invite you to submit your research. We look forward to your active participation and believe that your contribution will introduce breakthroughs to this field.

Dr. Xuan Yin
Dr. Jianxun Xu
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

  • nanolubrication
  • two-dimensional materials
  • functional polymer
  • quantum dot materials

Published Papers (2 papers)

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Research

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14 pages, 4249 KiB  
Article
Mechanical and Tribological Behavior of Nitrided AISI/SAE 4340 Steel Coated with NiP and AlCrN
by Marcos E. Soares, Qianxi He, Jose M. DePaiva, Bruna M. de Freitas, Paulo Soares, Stephen C. Veldhuis, Fred L. Amorim and Ricardo D. Torres
Lubricants 2024, 12(5), 181; https://doi.org/10.3390/lubricants12050181 - 17 May 2024
Viewed by 399
Abstract
In this study, novel surface engineering strategies to improve the wear performance of AISI 4340 were investigated. The strategies were as follows: (i) NiP deposition on a previously nitrided steel substrate, followed by NiP interdiffusion heat treatment at either 400 °C or 610 [...] Read more.
In this study, novel surface engineering strategies to improve the wear performance of AISI 4340 were investigated. The strategies were as follows: (i) NiP deposition on a previously nitrided steel substrate, followed by NiP interdiffusion heat treatment at either 400 °C or 610 °C (referred to as duplex treatment); (ii) the deposition of AlCrN PVD coating on NiP layers on a previously nitrided steel substrate (referred to as triplex treatment). Prior to the deposition of AlCrN, the NiP was subjected to the interdiffusion heat treatment at either 400 °C or 610 °C. These strategies were compared with the performance of the AlCrN coating directly applied on nitrided steel. To characterize the microstructural features of each layer, X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS) analysis were conducted. We also carried out mechanical and tribological behavior assessments. The tribological tests were carried out using a ball-on-disc tribometer under a constant load of 20 N and a tangential speed of 25 cm/s; cemented carbide spheres with a diameter of 6 mm were the counterpart body. The friction coefficient was continuously monitored throughout the tests. The results reveal that the wear mechanism for the AlCrN coating is predominantly oxidative. The most wear-resistant surface architecture was the one comprising AlCrN over the NiP layer subjected to interdiffusion heat treatment at either 400 °C or 610 °C. Full article
(This article belongs to the Special Issue Wear-Resistant Coatings and Film Materials)
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Review

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23 pages, 5380 KiB  
Review
Nanostructure of Superlubricating Tribofilm Based on Friction-Induced a-C:H Films under Various Working Conditions: A Review of Solid Lubrication
by Xuan Yin, Linyuan Mu, Zihang Jia, Haosheng Pang, Chunpeng Chai, Huan Liu, Chang Liang, Bing Zhang and Dameng Liu
Lubricants 2024, 12(2), 40; https://doi.org/10.3390/lubricants12020040 - 31 Jan 2024
Cited by 1 | Viewed by 1310
Abstract
Diamond-like carbon (DLC) film has gained widespread popularity as a versatile and important solid lubricant material in the field of tribology. Among various types of DLC films, hydrogen-rich DLC (a-C:H) film as a high-performance material has greatly enhanced anti-friction and anti-wear. However, despite [...] Read more.
Diamond-like carbon (DLC) film has gained widespread popularity as a versatile and important solid lubricant material in the field of tribology. Among various types of DLC films, hydrogen-rich DLC (a-C:H) film as a high-performance material has greatly enhanced anti-friction and anti-wear. However, despite its remarkable capabilities, the surface chemical properties and tribological performance of a-C:H film are significantly influenced by the surrounding environment, in special atmospheric conditions. Its super-slip mechanism involves the participation of hydrogen atoms, which can weaken the normal electron number of the outermost layer of a-C:H film. What is more, it is essential to investigate tribofilms in a vacuum or inert gas environment to ascertain the appropriate tribological properties of a-C:H film, which helps in mitigating oxidation effects. When non-doped DLC films are subjected to friction in a dry nitrogen or argon environment, they create sp3-C-rich transfer films on the contact surface, resulting in macroscopic super-slip effects. This paper aims to introduce and discuss the diverse nanostructures of in situ tribofilms in a-C:H film, focusing on the working environment, and explore the prospective application directions of a-C:H film. Full article
(This article belongs to the Special Issue Wear-Resistant Coatings and Film Materials)
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