纳米金属陶瓷Ni-AlN复合层的超声-电沉积制备  

Study on preparation of nanocermet Ni-AlN composite layer with method of ultrasonic-electrodepositing

作　　者：吴蒙华[1] 李智[1] 夏法锋[2] 傅欣欣[3] 

机构地区：[1]大连大学机械工程系,辽宁大连116622 [2]大庆石油学院机械系,黑龙江大庆151400 [3]东北大学材料科学与工程学院,辽宁沈阳110004

出　　处：《材料科学与工艺》2005年第5期548-551,共4页Materials Science and Technology

基　　金：国家自然科学基金资助项目(50275014);辽宁省自然科学基金资助项目(20022017)

摘　　要：采用超声-电沉积方法制备纳米金属陶瓷Ni—AlN复合层．研究了超声波机械扰动效用对电解液传质过程的作用，超声波空化效应对纳米粒子团聚的抑制作用，脉冲电参数对控制晶粒成核及生长的作用．采用优选工艺参数，在常用金属表面获得了由镍晶（20～60nm）和纳米粒子AlN构成的纳米级Ni—AlN复合镀层．镀层与基体结合比较牢固，结合力达到89N，厚度11～12μm，平均表面硬度达到HV606．The ultrasonic -electrodepositing method is used for preparing nanocermet Ni -AlN composite layers on steel substrates in this paper. The action of mechanical disturbance of ultrasonic wave on the mass - transfer of electrolyte, the restraint action of ultrasonic cavitation effect on reunion of nano particles and the action of electric pulse parameters on the nucleation and growth of grains have been studied by experiments. The nanocermet Ni -AlN composite layer consisting of nanocrystalline nickel （20 -60nm） and nano AlN particles has been obtained on the surface of common metal substrates by using optimum technology parameters. The composite layer possess following characteristics： firmly combining with substrates and combining force was 89N, thickness was between 11 - 12μm, and average surface hardness was HV606.

关 键 词：纳米金属陶瓷 Ni—AlN复合层 超声波 脉冲电沉积 复合作用 

分 类 号：TQ153[化学工程—电化学工业]