Jeong-Min Lim, Byung-Su Kim, Seung-Ho Ann, Jung-Gu Kim
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引用次数: 0
Abstract
In this study, the galvanic corrosion behavior of a tinned Cu terminal coupled with an Al–Mg–Si alloy was analyzed. When the Al alloy and tinned Cu were electrically connected and exposed to an electrolyte, tri–metallic galvanic corrosion occurred between the Al alloy, the Sn plating, and the Cu base metal. Results from Potentiodynamic and zero resistance ammeter tests indicate that the total galvanic corrosion rate increases as the area ratio of Sn plating to the Cu base metal decreases. Furthermore, the Sn, which has an intermediate potential, may function as either an anode or a cathode. While most of the Sn plating was protected by the Al alloy, corrosion of the Sn plating was observed at the boundary between the Sn plating and the Cu base metal. Thus, the exposed Cu area and galvanic corrosion of the Al-tinned Cu couple increase over time. Consequently, to prevent failure due to corrosion at the connection of the Al body and the tinned Cu terminal, exposed Cu area and damage of the Sn plating of tinned Cu terminal should be minimized.
期刊介绍:
CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion.
70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities.
Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives:
• Contribute awareness of corrosion phenomena,
• Advance understanding of fundamental process, and/or
• Further the knowledge of techniques and practices used to reduce corrosion.