疏水性离子液体电沉积镍铁合金微观结构调控及机理研究

项目名称： 疏水性离子液体电沉积镍铁合金微观结构调控及机理研究

项目编号： No.51304024

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 矿业工程

项目作者： 朱艳丽

作者单位： 北京理工大学

项目金额： 26万元

中文摘要： 镍铁合金具有优良的磁学、电学和力学性能，工业应用前景十分广阔。微观结构是决定镍铁合金性能的关键因素。电沉积制备镍铁合金的一个重要难题是微观结构的调控，以满足实际工业应用的性能要求。本项目拟采用疏水性离子液体为电解质，开展镍铁合金微观结构可控制备的研究。主要研究金属配合物的最稳定构型；离子液体阳离子、添加剂和金属配合物在阴极表面吸附行为，沉积电压对各组分吸附行为的影响规律，探明阴极表面微观结构；电解液组成、电流密度、沉积电压等参数对镍铁合金晶相结构、合金组成、晶粒大小、形貌等微观结构的影响规律，建立电沉积条件与镍铁合金微观结构对应关系与调控机制。该项目以离子液体电解质/阴极界面微观结构的基础研究为核心，从研究单组分镍和铁电化学还原过程出发，深入探讨合金电沉积的行程机理，掌握电沉积条件与微观结构间的关联性及其演变规律，为获得高性能合金材料及其在实际高新技术领域中的应用提供科学依据和技术支撑。

中文关键词： 离子液体；铁；镍；合金；电沉积

英文摘要： Ni-Fe binary alloy is widely applied in many industries due to its beneficial magnetic property and dimensional stability. Microstructure is a key factor in determining the quality of Ni-Fe alloy. One of the most obstacles for electrodeposition of alloy is to control the alloy microstructure to meet the performance requirements in the practical application. In the present project, hydrophobic ionic liquids will be used as the electrolytes to prepare Ni-Fe alloy. The major research contents include: the most stable structure of the metallic complexes; the electric structure on the cathode surface by studying the adsorption behavior of cations, additives and metallic complexes on the cathode surface; the effects of ionic liquid composition, current density, applied voltage and other parameters on the microstructure of Ni-Fe alloy. This project will conduct around the key scientific problem of ionic liquid/cathode interface structure, and propose the interrelation between the electrodeposition conditions and alloy microstructure on the basis of the studies of electrodeposition process of nickel and iron, respectively. This research is of scientific importance for industrial application and alloy development.

英文关键词： Ionic liquid；Iron；Nickel；Alloy；Electrodeposition