分别测试在CrNi3MoVA钢表面溅射NiCrAlY涂层和电火花沉积NiCrAlY涂层的室温摩擦磨损性能, 研究了磨损机制. 结果表明: 在稳定磨损阶段, 两种涂层的摩擦系数均低于基体, 其中电火花沉积层的摩擦系数最小, 具有显著的减摩效果. 溅射涂层的磨损机制主要是粘着磨损, 而电火花沉积层的磨损机制主要是微切削磨料磨损.
The friction and wear properties of a sputtered NiCrAlY coating and an electrospark deposited (ESD) NiCrAlY on CrNi3MoVA steel substrate coating were investigated at room temperature. The results show that the friction coefficient of the two coatings is lower than that of the substrate during stable wearing course. The electrospark deposited NiCrAlY coating has a significant antifriction effect because its friction coefficient value is much lower than the sputtered one. The wear mechanism of the sputtered NiCrAlY coating could be mainly characterised by adhesive wear while the dominant wear mechanism for electrospark deposited NiCrAlY coating is micro-abrasive wear.
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