Which metals would act as sacrificial anodes (cathodic protection) for iron? Ni Pb Mg Zn Na Despite its ability to act as a sacrificial anode for iron, which metal's reactivity with water makes it unsuitable to attach to the hull of a steel ship? Mg Ni Na Zn Pb
Science behind corrosion-test
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
In a Galvanic cell, to prevent the corrosion of a less active material surface highly active metals are used and these are termed Sacrificial Anodes.
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