Tribology and Wear Properties of Self-Lubricating Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Tribology".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 1710

Special Issue Editors


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Guest Editor
The Leonardo Tribology Centre, Department Mechanical Engineering, University of Sheffield, Sheffield S1 3JD, UK
Interests: self-lubricating; advanced materials; coating friction; wear mechanism; composites; wear resistance; micro-, nano- structure; contact mechanicms; surface properties; interface mechanical/physical/chemical properties

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Guest Editor
Research Institute for Clean Growth and Future Mobility (CGFM), Coventry University, Coventry CV1 2JH, UK
Interests: self-lubricating; non-destructive testing; tribo-sensing; digital twin; clean growth; future mobility; wheel-rail contacts; bio-degradable lubricants; laser surface texturing; laser cladding; nuclear structural integrity

Special Issue Information

Dear Colleagues,

Machines consist broadly of mechanical structures and tribological elements. In the last few decades, driven by the global sustainable development policy and environmental legislation, the development and implementation of self-lubricating materials for tribological machine elements have been widely studied with the aim of minimizing the use of environmental harmful lubricants and reducing the energy consumption from material friction and wear. Self-lubricating materials are a new generation of materials that utilizes the benefits of incorporated solid-lubricating compounds, e.g., polymer-based, soft metal-based, intermetallic composites, metal oxides, etc. The aim of the special issue ‘Tribology and Wear Properties of the Self-Lubricating Materials’ focuses on both experimental and simulational studies on the design and development of self-lubricating materials, evaluation of tribological properties, prototyping of tribological machine elements, validation of tribological applications, etc. In particular, the topics of interest include but are not limited to:

  • Design and development of self-lubricating materials;
  • Development of experimental methods for understanding the friction, wear, and lubrication properties of self-lubricating materials;
  • Assessment of the tribological performance of machine elements made from self-lubricating materials;
  • Evaluation and validation of tribological applications in machine elements;
  • Characterization of interfaces for self-lubricating materials;
  • Micro-, nano mechanism analysis regarding friction and wear;
  • Experimentation and simulation of self-lubricating material failures.

Dr. Juanjuan Zhu
Dr. Ping Lu
Guest Editors

Manuscript Submission Information

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Published Papers (1 paper)

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Research

17 pages, 11203 KiB  
Article
Tribological Behavior and Self-Healing Properties of Ni3Al Matrix Self-Lubricating Composites Containing Sn-Ag-Cu and Ti3SiC2 from 20 to 800 °C
by Yuchun Huang, Haishu Ma, Yubo Meng and Xiyao Liu
Coatings 2023, 13(4), 711; https://doi.org/10.3390/coatings13040711 - 31 Mar 2023
Cited by 1 | Viewed by 1171
Abstract
As a high-temperature structural material, Ni3Al matrix composites are often used to manufacture basic mechanical components that need to be used in high-temperature conditions. To meet the increasing demand for metal matrix composites with an excellent tribological performance over a wide [...] Read more.
As a high-temperature structural material, Ni3Al matrix composites are often used to manufacture basic mechanical components that need to be used in high-temperature conditions. To meet the increasing demand for metal matrix composites with an excellent tribological performance over a wide temperature range, Ni3Al matrix self-lubricating composites containing Sn-Ag-Cu and Ti3SiC2 (NST) were synthesized via laser-melting deposition. Dry sliding friction tests of NST against Si3N4 ball were undertaken from 20 to 800 °C to investigate the tribological behavior and wear-triggered self-healing properties. The results show that the tribological behaviors of NST are strongly dependent on the testing temperature and self-healing properties. At low and moderate temperatures from 20 to 400 °C, as the Sn-Ag-Cu flows into the cracks and is oxidized during sliding friction, while the cracks on the worn surface are filled with oxides consisting mainly of Al2O3, SnO2 and CuO. At higher temperatures of 600 and 800 °C, the cracks are filled by the principal oxides of Al2O3, TiO2 and SiO2 due to the partial decomposition and oxidation of Ti3SiC2. Compared with other testing temperatures, the recovery ratio relative to the Ni3Al base alloy of the cracks on the worn surface of NST is the highest at 400 °C, which is about 76.4%. The synergistic action mechanisms of Sn-Ag-Cu and Ti3SiC2 on the crack self-healing from 20 to 800 °C play a significant role in forming a stable solid lubricating film, improving the anti-friction and wear resistance of NST. The results provide a solution allowing for metal matrix composites to achieve excellent lubrication stability over a wide temperature range by virtue of the crack self-healing properties. Full article
(This article belongs to the Special Issue Tribology and Wear Properties of Self-Lubricating Materials)
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