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为研究AlCoCrFeNiCu高熵合金在强氧化的过氧化氢介质中的摩擦学性能,采用销盘磨损试验机测试了AlCoCrFeNiCu合金与3种工程陶瓷[氧化锆(ZrO2)、碳化硅(SiC)和氮化硅(Si3 N4)]组成摩擦副在90%过氧化氢介质中的摩擦学性能,采用SEM、EDS、白光共焦显微镜等分析了磨损表面,并且探讨了高熵合金与3种陶瓷配副在高浓度过氧化氢中的磨损机理.结果表明:在高浓度过氧化氢中,AlCoCrFeNiCu合金与碳化硅和氮化硅陶瓷配副具有较低的摩擦系数和较小的磨损;AlCoCrFeNiCu/ZrO2摩擦副的主要磨损机制为黏着磨损和磨粒磨损,同时伴随有氧化磨损;AlCoCrFeNiCu/SiC摩擦副和AlCoCrFeNiCu/Si3N4摩擦副的主要磨损机制为抛光型氧化磨损并伴随有轻微的三体磨粒磨损;AlCoCrFeNiCu/Si3N4摩擦副还伴随有边界润滑效应.
In order to study the tribological properties of AlCoCrFeNiCu high-entropy alloy in a strong oxidized hydrogen peroxide medium, the wear resistance of AlCoCrFeNiCu alloy with three kinds of engineering ceramics [ZrO2, SiC and nitriding (Si3N4)] tribocomponents in 90% hydrogen peroxide medium, the worn surfaces were analyzed by SEM, EDS and white light confocal microscope. The effects of high entropy alloy and three kinds of ceramics on The results show that AlCoCrFeNiCu alloy with silicon carbide and silicon nitride ceramic has lower friction coefficient and less wear in high concentration of hydrogen peroxide. AlCoCrFeNiCu / ZrO2 friction pair The main wear mechanism of the AlCoCrFeNiCu / SiC friction pair and the AlCoCrFeNiCu / Si3N4 friction pair is wear-oxidation wear with slight three-body abrasive wear; the wear mechanism of AlCoCrFeNiCu / Si3N4 friction pair is also accompanied by the boundary lubrication effect.