摘要
在超声作用条件下以复合电镀法制备了Ni-ZrO_2纳米复合镀层,用X射线衍射仪和扫描电镜分别对镀层的结晶取向和表面形貌等微观结构进行了分析,并对镀层的显微硬度进行了测试。结果表明:与不加超声相比,在超声作用下制备的Ni-ZrO_2纳米复合镀层也在(2 0 0)晶面形成择优取向,但其晶面相对织构系数明显提高,达到93%;由于超声强力搅拌和超声空化效应,在超声作用下制备的Ni-ZrO_2纳米复合镀层的晶粒尺寸细小、组织均匀致密;其显微硬度较高,达到602 HV,比无超声(497 HV)时的有大幅度提高。
Ni-ZrO3 nanocomposite coating was prepared by composite electro-plating method under ultrasonic effect condition. The crystal orientation and surface morphology of the composite coating were analyzed by XRD and SEM. The mierohardness of the coating was tested. The results show that compared with the coating without ultrasonic the preferential orientation of the Ni-ZrOz nanocomposite coating prepared under ultrasonic condition was formed in （200） crystal face, the relative texture coefficient of the crystal face was significantly increased which was up to 93%. Owing to ultrasonic violent agitation and ultrasonic cavitation effect, the Ni-ZrOz nanocomposite coating had refined crystal grain, compact microstructure and high microhardness, which reached 602 HV and was much higher than without ultrasonic （497 HV）.
出处
《机械工程材料》
CAS
CSCD
北大核心
2010年第7期80-83,94,共5页
Materials For Mechanical Engineering
基金
国家自然科学基金资助项目(50775067)
教育部科学技术研究重点项目(208079)
