摘要
[目的]研究镀液中添加不同浓度硝酸钇时对电镀镍层微观结构和性能的影响。[方法]通过循环伏安(CV)分析和计时电流(CA)测试研究硝酸钇对镍电沉积行为的影响。采用扫描电镜(SEM)和X射线衍射仪(XRD),结合摩擦磨损试验、显微硬度检测及电化学测试,研究了Y(NO_(3))_(3)质量浓度对Ni镀层晶粒形貌、择优取向、力学性能及耐蚀性的影响。[结果]镀液添加Y(NO_(3))_(3)后,镍的沉积电位负移,形核速率增大,Ni镀层晶粒尺寸和表面粗糙度减小,晶面择优取向由(111)转变为(220),显微硬度持续升高,耐蚀性和耐磨性先变好后变差。[结论]镀液的Y(NO_(3))_(3)质量浓度为0.4 g/L时,Ni镀层的综合性能最优,兼具高硬度、低摩擦因数和优异耐蚀性。
[Objective]To study the effect of yttrium nitrate concentration in bath on the microstructure and properties of electroplated nickel coating.[Method]The effect of Y(NO_(3))_(3) on the electrodeposition behavior of nickel was analyzed by cyclic voltammetry(CV)and chronoamperometry(CA).Scanning electron microscopy(SEM),X-ray diffraction(XRD),friction and wear testing,microhardness measurement,and electrochemical testing were employed to study the effect of mass concentration of Y(NO_(3))_(3) on the morphology,preferred orientation,mechanical properties,and corrosion resistance of Ni coatings.[Result]The addition of Y(NO_(3))_(3) made the deposition potential of nickel shift negatively and the nucleation rate increase,leading to the decrease in grain size and surface roughness of Ni coating.With the increasing of Y(NO_(3))_(3) concentration,the preferred crystal orientation transferred from(111)to(220),the microhardness continuously increased,while the corrosion and wear resistance initially improved and then deteriorated.[Conclusion]The Ni coating electroplated with 0.4 g/L of Y(NO_(3))_(3) exhibited the best comprehensive performance,as shown by high hardness,low friction coefficient,and excellent corrosion resistance.
作者
张忠科
马程远
吴伟
ZHANG Zhongke;MA Chengyuan;WU Wei(School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《电镀与涂饰》
北大核心
2025年第8期1-8,共8页
Electroplating & Finishing
基金
中央引导地方科技发展资金项目(24ZYQA035)
兰州市科技计划项目(2023-1-23)。
关键词
电镀
镍
硝酸钇
微观结构
耐蚀性
显微硬度
耐磨性
electroplating
nickel
yttrium nitrate
microstructure
corrosion resistance
microhardness
wear resistance
作者简介
通信作者:张忠科(1978-),男,博士,副教授,研究方向为有色金属加工及连接技术。
