非晶态铬电镀溶液的电极过程

来源期刊：中南大学学报(自然科学版)1995年第6期

论文作者：王先友 蒋汉瀛 郭炳昆

文章页码：830 - 833

关键词：非晶态材料; 电镀; 钝化; 成核

Key words：amorphous materials,electroplating; passivation; nucleation

摘    要：用Ni,CU,Fe和玻璃碳电极,研究了非晶态铬电镀过程中CR(－Ⅵ)还原为CR(Ⅲ)的电化学特征,发现CR(Ⅵ)还原为CR(Ⅲ)的电势与电极材料密切相关,在金属电极上还存在着新相的形成和生长过程,新相形成主要是钝化膜中的铬离子还原为金属铬,这为后继的铬电沉积提供了晶体生长中心的过程。

Abstract: This paper has studied the electrochemical characteristics in the reduction of Cr(Ⅵ)toCr(Ⅲ)on Ni,Cu,Fe and vitreous carbon electrodes in a solution of amorphous chromiumplating. The results show that the potential in the reduction of Cr(Ⅵ)to Cr(Ⅲ)is closelyconnected with Cr(Ⅲ)ions in a passivating film formed spontaneously which are reduced toCr(0)when the metals are immersed in the bath and provided the growing central of crystalfor the following reduction of Cr(Ⅵ)to Cr