Cathodic Plasma Electrolysis Processing for Metal Coating Deposition
Cathodic Plasma Electrolysis Processing for Metal Coating Deposition
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DOI：
10.1007/s11090-016-9750-1
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发表时间：
2016
影响因子：
3.6
通讯作者：
Xu Yang;Xianfei Ding;G. Hao;Yongfeng Liang;Junpin Lin
中科院分区：
文献类型：
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作者：
Xu Yang;Xianfei Ding;G. Hao;Yongfeng Liang;Junpin Lin
阴极等离子体电解（CPE）用于在钢丝表面沉积锌镀层。本研究研究了功率参数和涂层特性之间的关系，以确定根据 CPE 程序和脉冲直流功率循环控制涂层过程的最佳方法。我们发现电压应大于等离子体形成的临界电压。在直流电源下很难形成沉积涂层，但在 120 V、4000 Hz 和 80% 占空比的脉冲直流电源下很容易制备连续涂层。我们采用脉冲直流电源成功地促进了锌阳离子接近阴极表面，并通过降低占空比来防止高压下的金属丝熔化。电压、频率或占空比的降低对等离子体稳定性没有贡献，但确实增加了沉积速率和孔隙率。我们的实验等离子体形成过程表明，等离子体形成的作用是通过熔化和冲击来清洁阴极表面，从而在两个相邻脉冲之间的间隔处产生沉积。
Cathodic plasma electrolysis (CPE) is used to deposit Zn coating on the surface of steel wire. The relationships between power parameters and coating characteristics were investigated in this study to determine the best way to control the coating process according to the CPE procedure and pulsed DC power cycle. We found that voltage should be greater than the critical voltage for the formation of plasma. Deposition coating is difficult to establish under DC supply, however, continuous coating is rather easily prepared under pulsed DC power of 120 V, 4000 Hz, and 80 % duty cycle. We adopted pulsed DC power to successfully facilitate Zn cations approaching the cathode surface as well as to prevent wire melting under high voltage by reducing the duty cycle. Decreases in voltage, frequency, or duty cycle did not contribute to plasma stability, but did increase the deposition rate and porosity. Our experimental plasma formation process showed that the role of plasma formation is to clean the cathode surface by melting and shocking, which produces deposition at the interval between two neighboring pulses.