The bonded MoS₂ solid lubricant coating is an effective measure to mitigate the fretting wear of AISI 1045 steel. In this work, the amino functionalized MoS₂ was protonated with acetic acid to make the MoS₂ positively charged. The directional arrangement of protonated MoS₂ in the coating was achieved by electrophoretic deposition under the electric field force. The bonded directionally aligned MoS₂ solid lubricant coating showed high adaptability to various loads and excellent lubrication performance under all three working conditions. At a load of 10 N, the friction coefficient and wear volume of the coating with 5 wt% protonated MoS₂ decreased by 20.0% and 37.2% compared to the pure epoxy coating, respectively, and by 0.07% and 16.8% than the randomly arranged MoS₂ sample, respectively. The remarkable lubricating properties of MoS₂ with directional alignment were attributed to its effective load-bearing and mechanical support, barrier effect on longitudinal extension of cracks, and the formation of a continuous and uniform transfer film.

粘结MoS ₂ 固体润滑涂层是减轻AISI 1045钢微动磨损的有效措施。在这项工作中，氨基功能化的MoS ₂ 用乙酸质子化，使MoS ₂ 带正电。通过电场力下的电泳沉积实现了质子化MoS ₂ 在涂层中的定向排列。粘结定向排列MoS ₂ 固体润滑涂层在三种工况下均表现出对各种载荷的高度适应性和优异的润滑性能。在10 N载荷下，5 wt%质子化MoS ₂ 涂层的摩擦系数和磨损体积比纯环氧涂层分别降低了20.0%和37.2%，比纯环氧涂层降低了0.07%和分别比随机排列的 MoS ₂ 样品高 16.8%。定向排列的MoS ₂ 卓越的润滑性能归因于其有效的承载和机械支撑、对裂纹纵向扩展的阻挡作用以及形成连续均匀的转移膜。