Zn-Fe-P合金共沉积行为研究  

STUDY ON THE BEHAVIOR OF ELECTROPLATING Zn-Fe-P ALLOY

作　　者：王建明[1] 张昭[1] 张鉴清[1] 曹楚南[1] 

机构地区：[1]浙江大学,杭州310027

出　　处：《中国腐蚀与防护学报》2001年第5期280-285,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：国家重点基础研究发展规划基金资助项目 (G1 9990 650 0 1 ) ;国家自然科学基金 ( 50 0 71 0 54 )

摘　　要：采用H3PO3作为磷源制备Zn -Fe -P合金镀层 ,发现Zn -Fe-P合金镀层中Fe、P含量存在着同步效应 .采用循环伏安法研究了合金镀液中Fe2 + 和H3PO3的阴极电化学行为 ,发现镀液中的Fe2 + 和H3PO3彼此促进了对方的还原反应 ,并从量子化学的角度对镀层中Fe、P含量的这种同步效应进行了初步的理论探讨 .结果表明 ,由于铁的 4S轨道半径小于锌的 4S轨道半径 ,从而导致了铁的 4S空价轨道与磷的 3P空价轨道的重叠积分SFe -P大于锌的 4S空价轨道与磷的 3P空价轨道的重叠积分SZn -P,于是产生了镀层中Fe、P含量的同步效应 .研究还表明 ,铁族金属中Co、Ni与P的相互作用关系类似于Fe与P的相互作用关系 .A new formula containing H 3PO 3 as phosphorus source of Zn-Fe-P electrodeposits was reported.The results showed that the contents of the phosphorus and the iron in the electrodeposits change synchronously.The electrochemical behavior of H 3PO 3 and Fe 2+ in the electroplating solution has been investigated by cyclic voltammetry, it was shown that they promotes the reduction of each other and which has been studied in the view of quantum chemistry firstly.The theoretical results showed that, because the orbit radius of 4s of Fe is shorter than that of Zn, the overlapping integral of iron and phosphorus(s Fe-P ) is smaller than that of zinc and phosphorus(s Zn-P ) which results in the synchronous variation of the contents of the phosphorus and the iron in the electrodeposits, and which also showed that the cooperative effect of phosphorus and iron series metal.

关 键 词：Zn-Fe-P合金 电镀 同步效应 量子化学 

分 类 号：TQ153.2[化学工程—电化学工业]