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http://dx.doi.org/10.6117/kmeps.2022.29.4.071

Effects of Surface Treatment of Cathode Materials on the Electrodeposition Behavior of Fe-Ni Alloy  

Kang, Na Young (Department of Materials Science and Engineering, Hongik University)
Lee, Jae Ho (Department of Materials Science and Engineering, Hongik University)
Publication Information
Journal of the Microelectronics and Packaging Society / v.29, no.4, 2022 , pp. 71-75 More about this Journal
Abstract
In this research, Fe-Ni alloy films were electrodeposited on stainless steel (SS304 and SS430) and Ti plates to investigate the effects of surface conditions of cathode on deposits. The Ti plates were electropolished in 3 M H2SO4-methanol electrolytes at various conditions before electrodeposition, and unpolished Ti and the optimized specimen, polished at 10 V for 8 min, were used as cathode. The anomalous codeposition, the phenomenon which more active Fe is reduced preferentially, occurred on all substrate, however, there were differences in composition of all deposits. As the results of potential monitoring during electrodeposition, it was confirmed that the larger overpotential was applied to the deposition cell when using Ti cathode, leading to high Fe content of deposits from unpolished Ti due to increase in nucleation of Fe. Also, it was founded that the polished Ti can reduced deposition overpotential.
Keywords
Fe-Ni alloy; electrodeposition; Ti electropolishing; anomalous codeposition;
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