In order to improve the friction and wear properties of Cu10Al–MoS₂ coating, the addition of CeO₂ is one of the present research hot spots. In this work, Cu10Al–MoS₂ coatings with different CeO₂ mass fractions were successfully fabricated on Q235 steel using a laser cladding. The microstructure and phase compositions of obtained coatings were analyzed using an ultra-depth of field microscope and X-ray diffraction, respectively. The friction-wear test was carried out under oil lubrication using a ball-on-disk wear tester, and the effects of CeO₂ mass fraction on the microstructure, hardness, and friction-wear properties were studied, and the wear mechanism was also discussed. The results show that the laser cladded Cu10Al–MoS₂ coatings with the different CeO₂ mass fractions were mainly composed of Cu₉Al₄, Cu, AlFe₃, Ni, MoS₂, and CeO₂ phases. The Vickers-hardness (HV) of Cu10Al–8MoS₂–3CeO₂, Cu10Al–8MoS₂–6CeO₂, and Cu10Al–8MoS₂–9CeO₂ coatings was 418, 445, and 457 HV_0.3, respectively, which indicates an increase in hardness with the increase of CeO₂ mass fraction. The average coefficients of friction (COF) and wear rates decrease with the increase of CeO₂ mass fraction, presenting the outstanding friction reduction and wear resistance performances. The wear mechanism of Cu10Al–MoS₂ coatings is changed from abrasive wear with slight fatigue wear to abrasive wear with the increase of CeO₂ mass fraction.

为了提高Cu10Al-MoS ₂涂层的摩擦磨损性能，CeO _{2 的添加}是目前的研究热点之一。在这项工作中，使用激光熔覆在 Q235 钢上成功制造了具有不同 CeO ₂质量分数的Cu10Al-MoS ₂涂层。分别使用超景深显微镜和 X 射线衍射分析所得涂层的微观结构和相组成。使用球盘式磨损试验机在油润滑下进行摩擦磨损试验，CeO ₂的影响研究了质量分数对微观结构、硬度和摩擦磨损性能的影响，并讨论了磨损机制。结果表明，不同CeO ₂质量分数的激光熔覆Cu10Al-MoS ₂涂层主要由Cu ₉ Al ₄、Cu、AlFe ₃、Ni、MoS ₂和CeO ₂相组成。Cu10Al–8MoS ₂ –3CeO ₂、Cu10Al–8MoS ₂ –6CeO ₂和Cu10Al–8MoS ₂ –9CeO ₂涂层的维氏硬度（HV）分别为418、445和457 HV _0.3，分别表示硬度随着 CeO ₂质量分数的增加而增加。平均摩擦系数（COF）和磨损率随着CeO ₂质量分数的增加而降低，表现出优异的减摩和耐磨性能。随着CeO ₂质量分数的增加，Cu10Al-MoS ₂涂层的磨损机制由轻微疲劳磨损的磨粒磨损转变为磨粒磨损。