【摘要】 采用离子渗镀技术在Ti6Al4V合金表面形成均匀致密的钼氮陶瓷渗镀层,对陶瓷层微动摩擦学性能进行研究。100000周次微动磨损试验结果表明,渗镀的Mo-N陶瓷层显著提高了Ti6Al4V合金的抗微动磨损能力。Ti6Al4V合金微动磨损机制是粘着与磨粒磨损的综合效应,Mo-N陶瓷层微动磨损机制是犁削。更多还原

【Abstract】 A dense molybdenum nitride layer was fabricated on the surface of Ti6Al4V alloy by a plasma planting process and its fretting characters and mechanism against corundum balls by fretting test were investigated in this study. The fretted surfaces were analyzed by means of a laser confocal scanning microscopy (LCSM). Results show that the Mo-N modified layer with a single γ-Mo2N phase significantly improves the fretting wear resistance of the treated Ti6Al4V alloy in ambient air. The γ-Mo2N layer reduces not only the friction coefficient from 0.7 to 0.4, but the wear volume of Ti6Al4V alloy to one over 174th. The fretting mechanism of Ti6Al4V alloy is a colligate effect of adhesion and debris wearing, but slough wearing for the Molybdenum Nitride layer.更多还原