纳米颗粒改性FeCoNi复合镀层的性能

Properties of nano-particle modified FeCoNi composite coating

采用纳米高岭土对FeCoNi合金镀层进行改性,通过纳米复合电镀工艺增强FeCoNi合金镀层的耐磨性能和显微硬度.以醋酸钾为插层剂,采用超声插层法对高岭石进行剥片处理,得到插层纳米高岭土,并应用在纳米复合电镀技术中制备了纳米高岭土改性FeCoNi电镀层.采用扫描电镜对所制备的材料进行形貌分析,通过摩擦磨损实验检测了镀层的摩擦学性能.结果表明,纳米高岭土有细晶强化的作用,使改性镀层的表面致密度得到了提升,硬度提高,摩擦因数有所降低.

The FeCoNi alloy coating was modified by nano-kaolinite.The wear resistance and microhardness of FeCoNi alloy coating were improved by nano composite plating.Nano-kaolinite was prepared by ultrasonic intercalation intercalated by potassium acetate as intercalating agent,then that was used in nano-composite electroplating technology.The morphology of the coating was analyzed by SEM,and the tribological properties of the coating were tested by friction and wear test.The results show that the surface density and hardness of the modified coating were increased,and the friction coefficient was decreased,with the effect of Nano-kaolin on fine grain strengthening.