Microstructure and Tribological Properties of High Entropy Alloy/Funtional Coatings

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Entropic Alloys and Meta-Metals".

Deadline for manuscript submissions: closed (15 June 2024) | Viewed by 1348

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Guest Editor
School of Mechanical Engineering, Shandong University, Jinan 250061, China
Interests: coating; cutting; heat transfer; temperature monitoring
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Special Issue Information

Dear Colleagues,

High-entropy alloy/funtional coatings have been widely utilized to protect component substrate in extreme conditions such as high pressure, high temperature, and strong corrosion, etc. The mechanical and thermal physical properties of high-entropy alloy/funtional coatings could be affected by the coating microstructure, which determines coating tribology characteristics and the component service life. Therefore, it is necessary to illustrate the relationship of coating microsture to physical properties, tribological properties and experimental results. This relationship could guide the design of functional coating. This Special Issue aims to solicit research/review papers on the design and application of new high-entropy alloy/functional coatings in scientific research or industry.

Dr. Jinfu Zhao
Guest Editor

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Keywords

  • high-entropy alloy
  • functional coating
  • coating microstructure
  • coating antifriction
  • tribology characteristics
  • coating physical property

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Published Papers (1 paper)

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Research

23 pages, 32557 KiB  
Article
Effects of PVD CrAlN/(CrAlB)N/CrAlN Coating on Pin–Disc Friction Properties of Ti2AlNb Alloys Compared to WC/Co Carbide at Evaluated Temperatures
by Jinfu Zhao, Lirui Zheng, Wenqian Li, Zhanqiang Liu, Liangliang Li, Bing Wang, Yukui Cai, Xiaoping Ren and Xiaoliang Liang
Metals 2024, 14(6), 662; https://doi.org/10.3390/met14060662 - 2 Jun 2024
Viewed by 1087
Abstract
Physical vapor deposition (PVD) coatings could affect the friction performance at the contact interface between Ti2AlNb alloy parts and tool couples. Suitable coating types could improve the friction properties of Ti2AlNb alloy while in contact with WC/Co carbide. In [...] Read more.
Physical vapor deposition (PVD) coatings could affect the friction performance at the contact interface between Ti2AlNb alloy parts and tool couples. Suitable coating types could improve the friction properties of Ti2AlNb alloy while in contact with WC/Co carbide. In this study, the linear reciprocating pin–disc friction tests between the Ti2AlNb alloy and the WC/Co carbide tool couple, with the sole variation of the PVD CrAlN/(CrAlB)N/CrAlN coating were conducted within the temperature range of 25–600 °C. The antifriction properties of the Ti2AlNb alloy were estimated using the time-varied friction coefficients, the alloy wear rate, worn surface topography, worn surface element, and wear mechanism analysis. The results showed that the PVD CrAlN/(CrAlB)N/CrAlN coating could decrease the average friction coefficient and alloy wear rate compared to the uncoated WC/Co carbide couple. The apparent adhesive wear and abrasive wear of the Ti2AlNb alloy could be improved due to the PVD coating at evaluated temperatures. The PVD CrAlN/(CrAlB)N/CrAlN coating could be utilized to improve the antifriction properties of the Ti2AlNb alloy, which may be deposited on the cutting tool to improve the machining performance of Ti2AlNb alloys in future aerospace machining industry. Full article
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