Corrosion Behavior of Electroplated Silver Coatings

2014-08-19 10:10 下载量：1

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The functional silver coatings were electrodeposited at various current densities from the borate-phosphate-carbonate (BPC) bath on copper and nickel substrates. The morphology of obtained coatings was studied by SEM and STM. Corrosion properties in 0.5 M H2SO4 solution was determined by methods of impedance spectroscopy and voltammetry. Corrosion products were determined by EDX analysis. The corrosion behavior of silver coatings was strongly related to their morphology. A higher corrosion resistance (15.4 kOhm cm2) was found for silver coatings obtained at lower current density 0.5 A dm–2. These coatings were fine-crystalline, smooth and compact. Upon these data, the operational range of current density (0.4 – 0.6 A dm–2) was established. The studied silver coatings are intended for microelectronics applications.

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瑞士万通中国有限公司

钻石会员 | 第22年

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