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VIDEO: What Is a Corrosion Microcell?

By Corrosionpedia Staff
Published: April 16, 2018 | Last updated: October 6, 2020
Key Takeaways

Microcell corrosion occurs on a molecular level.

Microcell corrosion is when active corrosion and the cathodic half-cell reaction that it produces take place at different points along the same piece of metal. Corrosion is, of course, an electrochemical reaction that produces voltage across an anode and a cathode. On the surface of a contiguous piece of metal, it is possible to have multiple corrosion cells, where pairs of adjacent anode-cathode electrons cover a large area of a metal's surface, leading to relatively uniform corrosion.

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Microcell corrosion is generally caused by concrete carbonation or high levels of chloride. This short video from CorrConnect shows how this process works at a molecular level.

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Corrosionpedia Staff

Corrosionpedia aims to provide the first steps in the research journey for asset integrity professionals the world over.

Working with our team of internal writers, contractors and third-party experts, we source world leading educational content on the subject of preserving the long-term integrity of the world's infrastructure and assets. We designed our proprietary platform to fit the needs of the industry, and build the in-demand tools to help connect industry professionals to the solutions and solutions providers they need.

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