润滑科技信息平台

Tailoring Cu, Mn, Al, and Mo to enhance high-temperature wear resistance of CoCrFeNi coatings: unraveling lubrication mechanisms via first-principles calculations

出版日期: 2025-09-15

DOI: https://doi.org/10.1016/j.triboint.2025.111195

To address the severe wear issues of titanium alloys at elevated temperatures, CoCrFeNi-based high-entropy alloy (HEA) coatings were applied to the surface of titanium alloys using high-velocity oxygen fuel (HVOF) spraying. These CoCrFeNi-based HEA coatings significantly enhanced the tribological properties of the titanium alloys at both 500 °C and 700 °C. Notably, the MoCoCrFeNi coating exhibited optimal wear resistance, achieving a wear rate of only 2 × 10 -15 m 3 N -1 m -1 at 700 °C. This improvement can be attributed primarily to the formation of NiMoO 4 oxide films as a friction layer, which greatly enhances the friction-reducing properties, along with the high hardness of the MoCoCrFeNi coating, even at elevated temperatures.

Multifunctional carbon dots: Versatile and high-efficiency additives for polyethylene glycol

Pub Date: 2025-09-15 DOI: https://doi.org/10.1016/j.triboint.2025.111195

[Weiwei Tang a, Hao Lei a, Yi Wang a, Haidong Liu c, Xian Wei c d, Wei Gao a, Zhe Zhang a, Zhiqiang Jiang b, Yufeng Li a]

Cobalt-removed polycrystalline diamond compact with bioinspired texture: Synergistic tribological performance enhancement for diamond thrust bearings

Pub Date: 2025-09-15 DOI: https://doi.org/10.1016/j.triboint.2025.111195

[Jiaqi Yun a b, Baochang Liu a b c]

Ti3C2Tx Quantum Dots Achieve Superior Corrosion Inhibition and Lubrication Via Forming Ti-O-Fe Coordination Bonds: Experimental Verification and Computational Investigation

Pub Date: 2025-09-15 DOI: https://doi.org/10.1016/j.triboint.2025.111195

[Heng Zhang a b, Biao Hu c, Yangmin Wu b, Minglong Yan b, Qinhao Zhang c, Wenwu Xu d, Wenjie Zhao b]