Anodic Index

04/05/26

“How can we quantify an element’s strength against corrosion?”

Two metals in contact with each other can start a corrosion reaction if the metals are electrochemically dissimilar. Each metal will have a certain tendency to give or receive electrons in a galvanic reaction, quantified by the Anodic Index. Anodic indices are typically measured from a reference metal, such as gold. The larger an element’s anodic index is, the more likely it is to become an anode and corrode.