In this module, we explore the electrochemical processes that result in galvanic and stray current corrosion. And of course we learn about passive and active measures to control and prevent it.
Corrosion (Galvanic and Stray Current)
We learn about the electrochemical processes that cause galvanic corrosion when two different types of metal are electrically connected and immersed in an electrolyte.
We discuss how to minimize the risk for corrosion by choosing the right materials, surface coatings, and construction methods.
We explore how to use a bonding system and sacrificial anodes to keep corrosion at bay. We also briefly look at impressed current systems.
Stray-current corrosion can be much worse than galvanic corrosion. We examine various examples of stray-current corrosion and how you can minimize the risk on your boat.
About the teacher
Jan & Nigel
This course has been created in a joint effort by Nigel Calder and Dr. Jan Athenstädt. Nigel is responsible for the lecture notes and Jan will take the role of presenter and guide you through the lessons.