Optimizing the Cr and V content in quaternary MAX phase for high-temperature lubricity and wear resistance

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2025-01-10 DOI:10.1016/j.triboint.2025.110525

Yaqing Xue, Hong Yu, Hongwei Liang, Xiaomei Wang, Conghui Meng, Shiyao Lei, Haochen Wang, Long Wang, Cheng-Feng Du

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Abstract

The MAX phase ceramics are one of the most promising solid lubricants for high-temperature (HT) conditions. Herein, two new quaternary MAXs with regulatable transition-metal constituents (Cr₁Ti_0.75Mo_0.75V_0.5AlC₂ and Cr_1.25Ti_0.75Mo_0.75V_0.25AlC₂) are synthesized based on an high-entropy (HE) analogue. Their tribological properties against the Si₃N₄ tribocouple in a wide temperature up to 800 ºC in the air are systematically studied, the impacts of the Cr and V contents on lubricity and anti-wear performance of the Cr-Ti-Mo-V MAXs are illuminated as well. At an extreme operating temperature of 800 °C, Cr_1.25Ti_0.75Mo_0.75V_0.25AlC₂ presents excellent self-lubrication performance with a mean COF of 0.20 and a mean wear rate as low as 3.6 × 10⁻⁷ mm³ N⁻¹ m⁻¹.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.