Morphology control technology of dendrite with layer by layer guidance

作者：Wang Gui Feng^*; Tian Zong Jun; Liu Zhi Dong; Shen Li Da; Huang Yin Hui

来源：Chinese Journal of Nonferrous Metals, 2011, 21(9): 2223-2229.

• Fractal growth
• Growth models
• Jet-electrodeposition
• Layer by layer
• Morphological evolution
• Morphology control
• Porous metal
• Porous tissue
• Process parameters

The two-dimensional fractal growth of dendrites was transferred into interlaced growth by swinging jet-electrodeposition. Subsequently, with layer by layer guidance in scanning and swinging jet-electrodeposition, the dendrites were guided to interlace with each other along the scanning direction, forming three-dimensional porous tissues. The porous tissues under different swinging numbers and step-sizes were analyzed and the controllable interlaced growth model of dendrites was established at the same time. The result shows that the morphological evolution of porous tissues proves the accuracy of this growth model. With a small swinging number, the neighbor dendrites are difficult to interlace with each other. When the swinging number is relatively large the massive branches come into being at the interlaced spots along the horizontal direction. As the step-size increases, the pores of porous tissues become larger in size. The morphology of porous tissues is well controlled by the regulation of process parameters and control conditions.

• 出版日期2011
• 单位南京航空航天大学