The half of a battery that is positively charged and to which anions migrate by electrostatic attraction. Half of an electrolytic corrosion cell in metal is called the "anode," from which metal dissolves, often leaving pits. The anode is the part of a corrosion cell in which oxidation occurs.
A protective device to prevent electrolytic corrosion. Anodes (often made of Mg or Al metal) are sacrificed intentionally to protect a steel system, such as a buried pipeline or offshore platform.
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