目的 构建MoS2薄膜的摩擦因数模型和磨损模型，预测其磨损体积。方法 通过球-盘摩擦磨损实验，研究法向载荷和滑动速度对MoS2薄膜摩擦因数的影响规律，其中最大接触压强范围为441.08~1393.82 MPa，滑动速度为0.05~0.628 m/s。利用场发射扫描电子显微镜(SEM)和白光共聚焦显微镜分析MoS2薄膜的磨损形貌。结果 基于赫兹接触理论，建立了MoS2薄膜摩擦因数与法向载荷和滑动速度的数学模型。预测结果与实测结果之间的最大相对误差为12.02%，其余预测结果的相对误差均小于10%。从摩擦耗散能的角度，研究发现MoS2薄膜的磨损体积与摩擦耗能之间呈显著的线性关系，结合新的摩擦因数模型，提出了MoS2薄膜的磨损模型。此磨损模型是法向载荷、滑动速度和摩擦时间的函数关系式，其相对误差绝对值的平均值为10.81%。与传统Archard模型的结果进行比较发现，新的磨损模型的相对误差较小。通过分析MoS2薄膜的磨损机理，探讨了磨损模型产生误差的原因。结论 所建立的摩擦因数模型和磨损模型的预测结果与实测结果吻合较好。磨损模型能够较准确地预测MoS2薄膜的磨损量，具有重要的工程应用价值。

The work aims to construct a friction coefficient model and a wear model of MoS2 film, and predict the wear volume. The effect law of normal load and sliding velocity on the friction coefficient of MoS2 film was studied by a ball-on-disk tribometer. The maximum contact pressure was between 441.08 and 1393.82 MPa, and the sliding velocity was from 0.05 to 0.628 m/s. The wear morphology of MoS2 film was characterized respectively by field emission scanning electron microscope (SEM) and white light confocal microscope. Based on Hertz contact theory, the mathematical model of friction coefficient, normal load and sliding velocity of MoS2 film was proposed. The maximum relative error between the predicted results and the measured results was 12.02%, and the relative error of other results was less than 10%. From the perspective of friction dissipation energy, it was found that there was a linear relationship between the wear volume and friction energy consumption of MoS2 film. Then, a wear model of MoS2 film was established combined with the new friction coefficient model. This wear model was a function of normal load, sliding velocity and friction time and the average absolute value of relative error of the wear model was 10.81%. Compared with the results of Archard model, the relative error of the new wear model was smaller. The wear mechanism of MoS2 film was analyzed to discuss the causes of errors in wear model. The predicted results of the friction coefficient model and wear model are in good agreement with the measured results. The wear model can accurately predict the wear of MoS2 film, which has important engineering application value.