In this research, the corrosion behavior of printed circuit boards with an immersion silver layer (PCB-ImAg) exposed to bacteria in Luria-Bertani broth was investigated. The growth test demonstrated that had a high copper tolerance. Analysis of surface and cross-sectional view of the samples after immersion test indicated that metabolites produced by accelerated the microporous corrosion of PCB-ImAg, and the biofilm that adhered to the surface led to oxygen concentration corrosion. Electrochemical impedance spectroscopy tests confirmed that the microbiologically influenced corrosion of PCB-ImAg was related to the biofilm formation and metabolism.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6614184 | PMC |
| http://dx.doi.org/10.3389/fmicb.2019.01493 | DOI Listing |
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