通过钇（Y₂O₃）的掺入提高cuzn -石墨自润滑复合材料的减摩性和耐磨性

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-09-24 DOI:10.1016/j.triboint.2025.111227

Xin Zhang , Wenxiao Wang , Kun Pei , Liuchen Wu , Yi Tao , Xiao Kang

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引用次数: 0

摘要

采用粉末冶金技术制备了cuzn -石墨-Y₂O₃复合材料，研究了Y₂O₃含量对其摩擦学性能的影响。通过石墨和Y₂O₃的协同作用，cuzn -石墨-1.0 wt%Y₂O₃复合材料（YP3）表现出最佳的摩擦减量和耐磨性，其体积磨损率为3.61 × 10−6 mm3/(N·m)，平均摩擦系数（COF）为0.131。拉曼光谱证实，Y₂O₃含量的变化非线性地影响了摩擦界面碳结构的演化。晶粒细化和位错钉钉协同强化了YP3，通过提高硬度（87.03 HV）和断裂韧性（2.273 MPa⋅m）提高了YP3的耐磨性。Y₂O₃通过改变石墨的界面性质改善了润滑膜的连续性，在滑动过程中有效地分离摩擦对偶。

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Enhancing friction reduction and wear resistance in CuZn-graphite self-lubricating composites via yttria(Y₂O₃) incorporation

In this paper, CuZn-Graphite-Y₂O₃ composites were prepared using powder metallurgy techniques, and the effect of Y₂O₃ content on their tribological behavior was investigated. The CuZn-Graphite-1.0 wt%Y₂O₃ composite (YP3) exhibited optimal friction reduction and wear resistance through the synergy between graphite and Y₂O₃, achieving a volumetric wear rate of 3.61 × 10⁻⁶ mm³/(N·m) and an average coefficient of friction (COF) of 0.131. Raman spectroscopy confirmed that varying Y₂O₃ content nonlinearly influenced the evolution of carbon structures at the friction interface. Grain refinement and dislocation pinning synergistically strengthened YP3, improving wear resistance via enhanced hardness (87.03 HV) and fracture toughness (2.273

MPa \cdot \sqrt{m}

). Y₂O₃ improved lubricating film continuity by modifying graphite interfacial properties, effectively separating friction counterparts during sliding.

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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.