摘要
应用循环伏安法和电位阶跃法研究了Pd-Fe合金电沉积的循环伏安特性与电结晶机理。结果表明,在以FeSO4·7H2O和Pd(NH3)2Cl2为主盐、磺基水杨酸(SSCS)为络合剂、(NH4)2SO4为导电盐所组成的镀液体系中,Pd-Fe合金共沉积经历了成核过程,而不是欠电位沉积,且其电沉积反应是一个不可逆过程;将Pd-Fe合金共沉积的恒电位暂态曲线进行拟合得知,其电结晶的成核过程属于三维瞬时成核方式。
The electrodeposition and electrocrystallization mechanism of palladium-iron alloy are studied by the methods of cyclic voltammetry and potential step. The results show that in the system of the electrolyte solution which is made up of FeSO4 · 7H2O and Pd(NH3 )2Cl2 being acted as the main salts, sulfosalicylic acid (SSCS) being the eomplexing agent and ammonium sulfate being the conductance salt, co-deposition of Pd-Fe alloy lives nucleation and no underpotential deposition; it's a irreversible process; according to the i~t curves of potential step, a conclusion can be drawn that the electrocrystallization of Pd-Fe alloy obeys the mechanism of instantaneous nucleation and three dimensional growth by attributing the potential step curve and calculating data of Pd-Fe alloy codeposition.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2006年第9期158-160,共3页
Materials Reports
基金
国家自然科学基金(50161002)
云南省自然科学青年基金(2001E0007Q)
国家人事部2001年度博士后基金
云南省高等学校教学
科研带头人培养计划项目资助
关键词
钯铁合金
电沉积
循环伏安
电位阶跃
成核机理
palladium-iron alloy, electrodeposition, cyclic voltammetry, potential step, electrocrystallization mechanism