What is the nominal corrosion potential of magnesium?

The nominal corrosion potential of magnesium is typically in the range of -1.75 to -1.55 volts. This negative potential indicates that magnesium is a highly reactive metal and has a strong tendency to corrode when exposed to electrolyte environments. The negative value signifies its position on the galvanic series compared to other metals, highlighting its sacrificial behavior in cathodic protection applications.

Magnesium's high corrosion potential makes it suitable as a sacrificial anode in cathodic protection systems. By providing a more negative potential, magnesium can effectively protect less reactive metals from corrosion.

In contrast, other provided values do not align with the established nominal corrosion potential for magnesium. Thus, the range of -1.75 to -1.55 volts accurately reflects the electrochemical characteristics of magnesium in various environments.