Nature of contact corrosion layers on lead alloys: A study by impedance spectroscopy
- 作者：M.M. Burashnikova ; burashnikova_mm@mail.ru ; I.A. Kazarinov ; I.V. Zotova
- 关键词：Lead-acid battery ; Lead alloys ; Corrosion layer ; Electrochemical impedance spectroscopy (EIS)
- 刊名：Journal of Power Sources
- 出版年：2012
- 期刊代码：58_03787753
- 类别：ce
- 出版时间：1 June, 2012
- 卷：207
- 期：Complete
- 页码：19-29
- 文件大小：1979 K
摘要
Corrosion layers on lead, lead-antimony and lead-calcium alloys doped with various components (Cd, Sn, Ba, and Ag) were studied using impedance spectroscopy. The films were formed under different potentials and polarization conditions in 4.8 M sulfuric acid solution. The nature of the corrosion layer formed at the alloy-oxidation products interphase was studied using impedance spectroscopy. The results show that the processes proceeding at this boundary can be simulated with an equivalent circuit corresponding to a two-layer model of the corrosion film (an outer high-conducting part and an inner low-conducting one). Parameters of the proposed equivalent circuits were estimated.