Abstract Duplex coatings comprising MoS2/Sb2O3/graphite layer burnished on top of plasma electrolytically oxidised AA6082 alloy enhanced fretting wear resistance against alumina and steel whilst reducing friction from ∼0.6…0.9 to ∼0.08…0.1 in dry nitrogen and humid air. Transitions to stick-slip (∼3 μm), partial slip (5-10 μm) and gross slip (>10 μm) showed an order of magnitude improvements over single-layer PEO coatings. In the latter mode, high initial contact pressures (∼1.1 GPa) with steel counterpart under oxidising atmosphere increased friction due to generation of Fe/Al/Cr oxides/hydroxides in the contact region, leading micro-cracking in PEO coating followed by fatigue damage of aluminium substrate. Reducing contact pressure

中文翻译：

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支撑铝上重载双相变色龙/PEO涂层微动磨损性能的表面特征

摘要 由等离子电解氧化 AA6082 合金顶部抛光的 MoS2/Sb2O3/石墨层组成的双相涂层增强了对氧化铝和钢的微动磨损性，同时在干燥的氮气和潮湿空气中将摩擦从 ~0.6…0.9 降低到 ~0.08…0.1。与单层 PEO 涂层相比，向粘滑（~3 μm）、部分滑移（5-10 μm）和总滑移（> 10 μm）的转变显示出一个数量级的改进。在后一种模式中，由于在接触区域产生 Fe/Al/Cr 氧化物/氢氧化物，与钢对应物在氧化气氛下的高初始接触压力（~1.1 GPa）会增加摩擦，导致 PEO 涂层出现微裂纹，然后疲劳损坏铝基板。降低接触压力