摘要
以稀土LaCl3作为添加剂,通过极化曲线、微分电容测定,探讨了稀土LaCl3对电铸镍铸液性能的影响及其在电极表面的作用机理,并采用SEM、XRD等现代分析手段对镍电铸层微观结构进行测试。试验结果表明:LaCl3能够在阴极表面发生特性吸附,增大阴极极化,细化精密电铸层晶粒,提高精密电铸的沉积速度,电铸层的显微硬度得到显著提高。
Ni layer were obtained by electrodeposition from a nickel sulfamate solution consisting of Lacl_3 particles. The effects of Lacl_3 particles on the electrodeposition of Ni were studied. The surface of Ni layer was observed and analyzed by scanning electron microscopy (SEM) and XRD. The results show that the Ni layer is apparently affected by LaCl_3 concentration in electrolyte.
出处
《机械制造与自动化》
2005年第3期22-24,26,共4页
Machine Building & Automation
关键词
精密电铸
稀土LaCl3
极化曲线
微分电容
precision electroforming
LaCl_3 particle
polarization curve
differential capacitance
