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超声波对Ni-ZrO2纳米复合镀层微观结构和显微硬度的影响
          
Effect of Ultrasonic on Microstructure and Microhardness of Ni-ZrO2 Nanocomposite Coating

摘    要
在超声作用条件下以复合电镀法制备了Ni-ZrO2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-ZrO2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-ZrO2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.
标    签 超声波   纳米复合镀层   ZrO2纳米颗粒   微观结构   显微硬度   ultrasonic   nanocomposite coating   ZrO2 nanoparticle   microstructure   microhardness  
 
Abstract
Ni-ZrO2 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 microhardness of the coating was tested.The results show that compared with the coating without ultrasonic the preferential orientation of the Ni-ZrO2 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-ZrO2 nanocomposite coating had refined crystal grain,compact microstructure and high microhardness,which reached 602 HV and was much higher than without ultrasonic(497 HV).

中图分类号 TQ153.4

 
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所属栏目 纳米材料

基金项目 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)

收稿日期 2009/6/3

修改稿日期 2009/12/29

网络出版日期

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备注申晨(1985-),男,河南商丘人,硕士研究生.

引用该论文: SHEN Chen,XUE Yu-jun,KU Xiang-chen,LIU Yi,LI Ji-shun. Effect of Ultrasonic on Microstructure and Microhardness of Ni-ZrO2 Nanocomposite Coating[J]. Materials for mechancial engineering, 2010, 34(7): 80~83
申晨,薛玉君,库祥臣,刘义,李济顺. 超声波对Ni-ZrO2纳米复合镀层微观结构和显微硬度的影响[J]. 机械工程材料, 2010, 34(7): 80~83


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