摩擦系数是表征光学玻璃抛光特性的重要参量，平均摩擦系数决定了抛光速率，摩擦系数的变化范围影响光学玻璃的面形精度和表面粗糙度。通过正交实验，研究了抛光过程中实验因素对磷酸盐激光玻璃和光学沥青抛光胶之间摩擦特性的影响。极差分析结果表明，实验因素对平均摩擦系数大小和摩擦系数变化范围影响的显著程度相同。其中，加载压力影响较大，而沥青抛光胶胶号影响较小。在本实验中高的平均摩擦系数对应着大的摩擦系数变化范围。另外，从粘滑摩擦、粘附、磨料磨削和抛光液液膜方面进行了分析，对引起摩擦系数随时间变化的诱因进行了探讨。

The coefficient of friction is an important parameter for the characterization of optical glass polishing properties. The average coefficient of friction determines the polishing rate, and its variation range affects the surface accuracy and surface roughness of optical glass. In this work, the orthogonal experiments are designed to study the influence of the experimental parameters on the friction properties between phosphate laser glass and optical polishing pitch in the polishing process. The degree that experimental parameters influence the average value and variation range of coefficient of friction is similar. The influence of the applied load is larger while that of polishing pitch type is smaller. A large average frictions coefficient corresponds to a large variation range of frictions coefficient in the experiment. Furthermore, the reasons for the change of frictions coefficient with time are discussed from the aspects of stick-slip friction, adhesion, abrasive grinding and polishing liquid thickness.