点阳极射流电沉积中的枝晶分形生长

Fractal Growth of Ni Dendrite in Jet-electrodeposition with Point Anode

利用建立的点阳极电沉积时枝晶分形生长模型,对圆形电解池点阳极电沉积二维枝晶簇的形貌进行了模拟。以点状金属镍为阳极,环状石墨为阴极,用自行设计的实验设备,采用射流电沉积的方法制备了二维的金属镍枝晶簇以验证模拟结果。结果表明:镍沉积层的形貌特征为具有分形结构的枝晶簇,这与模拟结果具有很好的相似性,表明该模型能够准确地表述圆形电解池点阳极电沉积时枝晶的生长过程,从而对枝晶分形生长的实验研究具有很好的指导意义。

The growth process of quasi-two-dimensional dendrite cluster by electrodeposition with a point anode and circular electrolytic cell was successfully simulated by the growth model of dendrite founded based on fractal theory. Using point metal Ni as anode and circular graphite as cathode, two-dimensional dendrite of Ni was manufactured by jet-electrodeposition to test the simulation. The result shows that the dendrite of Ni has the character of fractal, it is similar to the results of simulation. The model mentioned above gives a very accurate depiction to the growth process of dendrite in electrodeposition and would be helpful to direct the experimentation of dendrite fractal growth.