脉冲电沉积工艺参数对结晶器铜板Ni-Al_2O_3复合镀层硬度的影响  

Influence of Pulse Electrodeposition Parameters on the Hardness of Ni-Al_2O_3 Composite Coatings on Copperplate of Crystallizer

作　　者：邢晓轲[1] 张晓伟[2] XING Xiaoke;ZHANG Xiaowei(School of Landscape and Food Engineering,Xuchang Vocational Technical College,Xuchang 461000,China;School of Mechanical and Electrical Engineering,Xuchang Vocational Technical College,Xuchang 461000,China)

机构地区：[1]许昌职业技术学院园林与食品工程学院,河南许昌461000 [2]许昌职业技术学院机电与汽车工程学院,河南许昌461000

出　　处：《电镀与环保》2018年第4期4-7,共4页Electroplating & Pollution Control

摘　　要：采用脉冲电沉积技术在结晶器铜板表面制备了Ni-Al_2O_3复合镀层,并研究了脉冲电沉积工艺参数对其硬度的影响。结果表明:Ni-Al_2O_3复合镀层的硬度随占空比的增大(20%~100%)先增大后减小,随平均电流密度的增加(2~15A/dm^2)同样是先增大后减小;在占空比70%、平均电流密度9A/dm^2的条件下,获得纳米微粒的质量分数为3.76%的Ni-Al_2O_3复合镀层,其硬度达到最大值5.5GPa。复合镀层中纳米微粒的质量分数升高,有利于提高复合镀层的硬度。Ni-Al2O3 composite coatings were prepared on surface of copperplate of crystallizer by pulse electrodeposition, and the influence of pulse electrodeposition parameters on the hardness of composite coatings was studied. Results showed that the hardness of composite coating was increased first and then decreased with the increase of duty cycle ftom 20% to 100% and with the increase of average current density ftom 2 A/din2 to 15 A/din2. Ni A1203 composite coating with 3.76% nanoparticles was obtained when duty cycle was 70% and average current density was 9 A/din2, its hardness reached the maximum value of 5. 5 GPa. Higher mass ffaction of nanoparticles in composite coating can improve the hardness of composite coating.

关 键 词：硬度 Ni-Al2O3复合镀层 结晶器铜板 占空比 平均电流密度 

分 类 号：TQ153[化学工程—电化学工业]