Using ultrasound to increase copper and nickel dissolution and prevent passivation using concentrated ionic fluid.
Using ultrasound to increase copper and nickel dissolution and prevent passivation using concentrated ionic fluid.
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DOI：
10.1016/j.electacta.2023.143707
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发表时间：
2023-12
影响因子：
6.6
通讯作者：
Christopher E. Elgar;Sam Ravenhill;Philip Hunt;Ben Jacobson;Andrew Feeney;Paul Prentice;K. Ryder;Andrew P. Abbott
中科院分区：
文献类型：
--
作者：
Christopher E. Elgar;Sam Ravenhill;Philip Hunt;Ben Jacobson;Andrew Feeney;Paul Prentice;K. Ryder;Andrew P. Abbott
本文使用有针对性的超声波对表面进行阳极溶解。这些实验的目的是蚀刻通常会钝化的金属。该研究是在深共晶溶剂（DES）中进行的，因为这些溶剂在技术上可用于金属加工，但具有粘性的缺点，因此具有缓慢的质量传输，导致金属钝化。线性扫描伏安法显示，在超声处理下的氧化电位阳极（更积极）的电位线性的电流-电压响应。在安静条件下观察到钝化。还显示在超声处理下溶解电流大约大14倍。高速成像显示，不对称的气泡崩溃，导致增强的材料从表面的去除与蚀刻速率高达3.8 μm.min-1在超声条件下。
This paper uses targeted ultrasound on a surface undergoing anodic dissolution. The aim of these experiments was to etch metals that would normally passivate. The study was carried out in deep eutectic solvents (DESs) as these are technologically useful for metal processing but suffer the disadvantages of being viscous and hence have slow mass transport which results in metal passivation. Linear sweep voltammetry showed a linear current-voltage response at potentials anodic (more positive) of the oxidation potential under sonication. Passivation was observed in silent conditions. It was also shown that the dissolution current was roughly 14 times larger under sonication. High speed imaging showed asymmetric bubble collapse leading to enhanced removal of material from the surface with etch rates as high as 3.8 μm.min–1under ultrasonic conditions.