目的 研究冻融循环-紫外辐照复合因素侵蚀作用对钢化玻璃抗冲蚀性能的影响，并探究钢化玻璃表面冲蚀损伤的力学机理。方法 根据内蒙古中西部地区风沙环境特征，对冻融循环-紫外辐照复合因素侵蚀作用下的钢化玻璃进行风沙冲蚀试验，并结合接触力学、断裂力学、摩擦学理论，在单颗粒冲蚀普通环境钢化玻璃的情况下，分析钢化玻璃冲蚀损伤的一般力学机理，应用扫描电子显微镜（SEM）和激光共聚焦显微镜（LSCM）分析二维、三维损伤形貌，并与理论分析进行对比。结果 钢化玻璃冲蚀率随着冻融循环次数及紫外辐照等效时间的增加而增加。冲蚀速度由14 m/s增加到30 m/s时，钢化玻璃冲蚀率从0.010 mg/g增加到0.768 mg/g。冲蚀角度由15°增加到90°时，钢化玻璃冲蚀率从0.004 mg/g增加到0.453 mg/g。结论 冻融循环-紫外辐照复合侵蚀作用会使钢化玻璃的抗冲蚀性能减弱。冲蚀速度的增大会使冲蚀颗粒在钢化玻璃表面产生更大的冲击接触力，使压痕深度和径向裂纹增大，从而使钢化玻璃在颗粒反复冲击下的剥落材料体积增大，故冲蚀率随冲蚀速度的增大而增大，高冲蚀速度下钢化玻璃表面压痕深度及径向裂纹长度的增长率更快，故钢化玻璃冲蚀率在高冲蚀速度下增长更快。钢化玻璃冲蚀率随着冲蚀角度的增大而增大，钢化玻璃在中高角度下的冲蚀机理为微观切削原理，冲蚀范围较广，冲蚀深度较浅，极高角度下的冲蚀机理为压痕断裂，冲蚀范围较为集中，冲蚀深度较大。

This work aims to study the effect of freeze-thaw cycle and ultraviolet radiation on the erosion resistance of tempered glass, and to explore the mechanisms of erosion damage on the surface of tempered glass. Methods According to the characteristics of wind-sand environment in central and western Inner Mongolia, wind-sand erosion tests was carried out on the tempered glass under the freeze-thaw cycle and ultraviolet radiation combined factor, and combined with contact mechanics, fracture mechanics and tribology theory, analyse the general erosion damage mechanics mechanism in the case of single particle erosion of ordinary environmental tempered glass. Scanning electron microscopy (SEM) and laser confocal microscopy (LSCM) were used to analyze the two-dimensional and three-dimensional damage morphologies, and compared with the theoretical analysis. Results The erosion rate of tempered glass increases with the number of freeze-thaw cycles and the equivalent time of ultraviolet irradiation. When the erosion velocity increases from 14 m/s to 30 m/s, the tempered glass erosion rate increases from 0.010 mg/g to 0.768 mg/g. When the erosion angle is increases from 15° to 90°, the tempered glass erosion rate increases from 0.004 mg/g to 0.453 mg/g. Conclusion The erosion resistance of tempered glass will be weakened by freeze-thaw cycle and ultraviolet irradiation. The increase of the erosion velocity will cause the erosion particles to generate more impact contact force on the surface of the tempered glass, so that the indentation depth and the radial crack length increase, so that the tempered glass will increase the volume of the exfoliated material under repeated particle impact, so the erosion rate increases with the increase of erosion velocity. The surface indentation depth and radial crack length of tempered glass increase faster at high erosion velocity, so the tempered glass erosion rate increases faster at high erosion velocity. The erosion rate of tempered glass increases with the increase of erosion angle. The erosion mechanism of toughened glass at middle and high angle is micro cutting principle. The erosion scope is wider and the erosion depth is shallow. The erosion mechanism under high angle is indentation fracture, and the erosion scope is more concentrated, and the erosion depth is larger.