Let's assume that all of the following metals are used as part of a metal piping system, and an electrolyte solution is pumped through the system, which metal will corrode the most? (Hint: the easily oxidized one will corrode first) a. Ni (E°anode = −0.25 V) b. Sn (E°anode = −0.14 V) c. Mg (E°anode = −2.37 V) d. Cu (E°anode = +0.34 V) e. Fe (E°anode = −0.44 V)
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.
Let's assume that all of the following metals are used as part of a metal piping system, and an electrolyte solution is pumped through the system, which metal will corrode the most? (Hint: the easily oxidized one will corrode first)
| a. |
Ni (E°anode = −0.25 V) |
|
| b. |
Sn (E°anode = −0.14 V) |
|
| c. |
Mg (E°anode = −2.37 V) |
|
| d. |
Cu (E°anode = +0.34 V) |
|
| e. |
Fe (E°anode = −0.44 V) |
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