解成,彭军军,王旭,廖春发

• 1:高性能钢铁合金材料江西省重点实验室
• 2:江西理工大学冶金工程学院

摘要(Abstract)：

探索Nd(Ⅲ)离子在活性电极表面原位还原机制对优化熔盐电解制备Pr-Nd合金工艺过程具有重要的理论和现实意义。本研究采用扫描电化学显微技术(SECM)与计时电流分析相结合的方法,通过产生-收集模式原位分析Nd(Ⅲ)离子在不同电位条件下Ni阴极基体微区的电流响应及形核规律。结果表明,随着施加在Ni阴极基体表面电位在-0.6～-1.0 V (vs.Ag/AgCl)范围内负移,表面活性位点逐渐增多且分布更均匀,电流峰强度最高值由低于0.003μA逐渐增大至0.004μA。水溶液体系中激活的Nd(Ⅲ)离子在Ni阴极表面的二维形核区域不断增大,三维形核活性位点也不断增加且均匀分布。Nd(Ⅲ)离子在Ni基电极表面的主要形核方式为瞬时形核,Nd(Ⅲ)离子扩散系数约为8.57×10~(-9) m~2/s。

关键词(KeyWords)： Nd(Ⅲ)离子;扫描电化学显微分析;计时电流法;产生-收集模式;扩散系数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（52074134,52474328）

作者(Author): 解成,彭军军,王旭,廖春发

DOI: 10.19864/j.cnki.jxye.2025.02.008

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