(昆明理工大學 材料與冶金工程學院， 昆明 650093)
摘 要: 以環(huán)形金屬銅片作為陽極，細銅絲作為陰極，研究了在酸性電解液條件下金屬銅電沉積過程中的二維枝晶生長現(xiàn)象，測定了沉積時間—電流關(guān)系曲線，對外加電壓、電解液中硫酸銅濃度等對金屬銅的電沉積產(chǎn)物形貌及其分維數(shù)的影響進行了觀測、分析。研究發(fā)現(xiàn)，沉積過程中，電流隨沉積時間的增加而變大，沉積產(chǎn)物的分維數(shù)隨電解液中硫酸銅的增加而變大，隨外加電壓的變化而波動。
關(guān)鍵字: 分形；電沉積；銅
（School of Materials and Metallurgy，Kunming University of
Science and Technology，Kunming 650093, China）
Abstract:Using copper ring as anode and copper wire as cathode，the two-dimensional dendritic growth about copper electrodeposits from an acid solution by fractal geometry is studied to get the current—time graphs. The fractal dimension and macroscopic morphology on various experimental conditions are also analyzed. The results show that current increases from beginning to end of growth，and the fractal dimension of the two-dimensional copper deposits increases with the concentration of CuSO4， but fluctuates with the variety of applied voltage.
Key words: fractal; copper; electrodeposition
