316L不锈钢表面超疏水微纳镍镀层定向电沉积工艺优化研究  

Directional Electrodeposition of Micro-nano Superhydrophobic Coating on 316L Stainless Steel

作　　者：蒋斌[1] 曾利兰 梁涛[1] 潘浩波 乔岩欣[2] 张竞[2] 赵颖[1] JIANG Bin;ZENG Lilan;LIANG Tao;PAN Haobo;QIAO Yanxin;ZHANG Jing;ZHAO Ying(Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 1003, China)

机构地区：[1]中国科学院深圳先进技术研究院,深圳518055 [2]江苏科技大学材料科学与工程学院,镇江212003

出　　处：《中国腐蚀与防护学报》2018年第5期438-446,共9页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(81572113;51501218和51401092);广东省自然科学基金博士启动基金(2014A030310129);深圳基础研究项目(JCYJ20160608153641020);深圳市孔雀团队项目(110811003586331);深港创新圈项目(SGLH20150213143207910);江苏省产学研前瞻项目(BY2016073-12)~~

摘　　要：利用定向电沉积技术在316L不锈钢表面设计制备了一种超疏水微纳镍镀层,通过对电沉积参数的优化,获得最佳电沉积工艺参数:初次电沉积电流密度5 A·dm^(-2),电沉积时间为480 s,结晶调节剂浓度为1.5 mol/L;二次电沉积条件为10 A·dm^(-2),60s。借助SEM、XRD、电化学测试技术、接触角测试对涂层进行表征,结果表明制备的316L不锈钢表面镍镀层阵列微纳结构具有典型的花瓣状分级结构和较好的超疏水性能,镍镀层阵列微纳结构由具有(110)择优取向晶面的针锥阵列结构组成,随着二次电沉积电流密度的增大,镍镀层阵列微纳结构的生长经历从针锥向花瓣结构转变。A micro-nano superhydrophobic nickel coating was prepared on 316 L stainless steel in electrolyte of NiCl_2·6H_2O 1 mol/L, H_3BO_3 0.5 mol/L and ethylenediamine dihydrochloride 0.5～2.5 mol/L via a two-step electrodeposition process, namely, the first electrodeposition was performed by current density of 5 A·dm^（-2） for 480 s in the electrolyte with 1.5 mol/L crystallization regulator, while the second electrodeposition was conducted by current density of 10 A·dm^（-2） for 60 s. The prepared micro-nano superhydrophobic coating was characterized by means of surface analysis, electrochemical tests, and contact angle measurements. Results show that the micro-nano superhydrophobic coating presents typical needle-cone array structure with preferential orientation（110） plane and well superhydrophobic performance. With the increasing current density in the second electrodeposion step, the needle-cone array structure transforms gradually in petal-shaped hierarchical structure.

关 键 词：定向电沉积 超疏水 镍镀层 微纳分级结构 

分 类 号：TG174.2[金属学及工艺—金属表面处理]