Materials Reports 2020, Vol. 34 Issue (Z1): 427-432 |
METALS AND METAL MATRIX COMPOSITES |
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Simulation Study on 3D Microstructure of Mask-less Localized Electrodeposition |
WU Jianhui, WU Menghua, ZUO Shanshan, QIAN Ningkai
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School of Mechanical Engineering, Dalian University, Dalian 116622, China |
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Abstract In order to study the optimal process parameters of mask-less localized electrodeposition based on jet state, COMSOL Multiphysics simulation software and experiment were used to study the effects of current density, interelectrode gap, pulse duty ratio on the surface morphology and deposition rate of the deposition parts in the process of 3D microstructures without mask. The analysis results showed that the current density had a great influence on the morphology, grain size, internal pores and deposition rate of the deposition parts. When the current density exceeded 4.5 A/dm2, the surface morphology and pores dramatically deteriorated; the smaller the duty cycle, the better the localization; the smaller the diameter of the deposited cylinder, and the more uniform the sedimentation layer can be obtained when the polar spacing was 5 μm. The process parameters obtained by orthogonal experiment optimization were: current density 3.5 A/dm2, pole spacing of 5 μm, pulse duty-ratio of 10%.
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Published: 01 July 2020
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Fund:This work was financially supported by the National Natural Science Foundation of China (51875071). |
About author:: Jianhui Wu, master of Dalian University, 2013—2017, undergraduate of Dalian University, 2017 till now, master of Dalian University. He has participated in various competitions organized by Liaoning Province and the whole country for many times ; Menghua Wu, professor of Dalian University, doctor of engineering, doctoral supervisor. After 35 years of teaching, he has been awarded the honorary titles of “Liaoning Provincial Teacher”, “Liaoning Provincial Distinguished Professor”, “Liaoning Provincial Professional Leader of Ordinary Institutions of Higher Lear-ning”, “Hundreds of Thousands of Talents Project”, “Dalian Model Worker” and “Dalian Excellent Expert”. |
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