镀液pH对电沉积镍-钼-磷合金薄膜组织结构及性能的影响  

Effect of plating bath pH on microstructure and properties of electrodeposited nickel-molybdenum-phosphorus alloy film

作　　者：吴斌杰 何湘柱[1] 谢家贺 WU Binjie;HE Xiangzhu;XIE Jiahe(School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《电镀与涂饰》2024年第11期47-52,共6页Electroplating & Finishing

摘　　要：[目的]镀液pH是影响金属电沉积过程的关键因素之一,进而影响着沉积层的组织结构和性能。[方法]采用直流电沉积法在泡沫镍(NF)上制备Ni-Mo-P合金薄膜。采用X射线衍射仪(XRD)、扫描电镜(SEM)和能谱仪(EDS)分析了不同pH下所得Ni-Mo-P合金薄膜的晶相结构、微观形貌及元素组成,并通过电化学方法考察了镀液pH对Ni-Mo-P合金薄膜析氢性能及耐蚀性的影响。[结果]在pH为7~11范围内电沉积所得的Ni-Mo-P合金薄膜均呈现非晶态结构,但组织结构及性能有差异。pH为9时所得的Ni-Mo-P合金薄膜表面最为光滑平整,载量最大,并且耐腐蚀性能最好。pH为10时所得Ni-Mo-P合金薄膜的析氢催化活性最佳。[结论]通过调整镀液的pH,可电沉积得到具备不同组织结构及性能的Ni-Mo-P合金薄膜。[Introduction]The pH of plating bath is one of the key factors affecting the electrodeposition process of metal,which in turn affects the microstructure and properties of the deposit.[Method]Ni-Mo-P alloy thin films were prepared on nickel foam(NF)by electroplating under direct current.The phase structure,micromorphology,and elemental composition of the Ni-Mo-P alloy films electroplated at different pHs were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),and energy-dispersive spectroscopy(EDS).The effect of plating bath pH on the hydrogen evolution and corrosion resistance of Ni-Mo-P alloy film was examined by electrochemical methods.[Result]All the Ni-Mo-P alloy films electrodeposited within the pH range of 7 to 11 were amorphous,but differet from each other in terms of microstructure and properties.The Ni-Mo-P alloy film electrodeposited at a pH of 9 had the smoothest and most uniform surface,the highest weight,and the best corrosion resistance,while the one electrodeposited at a pH of 10 exhibited the best catalytic activity for hydrogen evolution.[Conclusion]Ni-Mo-P alloy films with different microstructures and properties can be electrodeposited by adjusting the pH of plating bath.

关 键 词：电沉积 泡沫镍 镍−钼−磷合金 碱度 组织结构 析氢 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]