金属锌电沉积过程的分形研究  

Dendrite Growth of Metal Zinc in Electrodeposition Process

作　　者：张皓东[1] 谢刚[2] 李荣兴[2] 陈书荣[2] 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650093 [2]昆明理工大学材料与冶金工程学院,云南昆明650093

出　　处：《化学研究》2005年第1期52-54,共3页Chemical Research

基　　金：国家自然科学基金资助项目(50074019).

摘　　要：对金属锌电沉积过程中的二维枝晶生长进行了研究,分析了外加电压、电解质浓度以及温度等实验条件对电沉积产物形貌及其分形维数的影响.结果表明,随着外加电压的增大,沉积产物形貌的变化趋势为由开放的分枝结晶向较为致密的生长形貌转变;随着硫酸锌浓度的增大,沉积产物具有分叉结构的致密纤维状枝晶簇和较为粗壮的开放型规则的分叉状枝晶,分形维数发生相应的变化;随着温度的升高,沉积产物的枝晶呈均匀化、致密化,沉积产物分形维数呈明显增大的趋势.Two-dimension dendritic growth of electrodeposition of metal zinc is studied. The influence of voltage, concentration of electrolyte and temperature to the appearance of the product and the fractal dimension is investigated. The results show that the formation of the products has a trend from open growth to dense growth when the applied voltage is increased; As the concentration of zinc sulfate increases, the formation of product appears thin stringy structures and open grossness structures with a relative change of the fractal dimension. When the temperature increases, the dendritic crystal becomes uniformed and densified, and the fractal dimension increases also.

关 键 词：锌 电沉积过程 分形维数 枝晶 温度 电解质 浓度 

分 类 号：O614.241[理学—无机化学]