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Corrosion Science: Galvanic Series and Environmental Factors

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Corrosion Science: Galvanic Series and Environmental Factors

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Questions and Answers

How does 'overvoltage' affect the corrosion rate of a metal in the galvanic series?

Increases the effective electrode potential of the metal

Lowers the effective electrode potential of the metal (correct)

Enhances the corrosion rate of the metal

Reduces the corrosion rate of the metal

How does the physical state of metals influence corrosion?

Stress has no impact on corrosion

Larger grain size reduces corrosion

Strained metal decreases electrode potential

Smaller grain size increases corrosion (correct)

In what type of medium does metal corrosion occur faster according to the text?

Neutral conditions

Extreme heat

Acidic conditions (correct)

Alkaline conditions

How does humidity impact the corrosion of metals based on the text?

Increases corrosion rate Signup and view all the answers

What determines the rate and severity of corrosion in metals according to the text?

The difference of electrode potentials or positions of the metals in the galvanic series Signup and view all the answers

Why does corrosion at the anodic region occur at a faster rate when dissimilar metals are in contact in a corrosive medium?

Because the anodic metal is higher up in the galvanic series Signup and view all the answers

Which metal corrodes faster when in contact with copper in a medium according to the text?

Zinc Signup and view all the answers

What is the best example provided in the text to illustrate faster corrosion?

Defective surface coating of tin on iron metal Signup and view all the answers

Corrosion Science: Galvanic Series and Environmental Factors

Choose a study mode

Podcast

Questions and Answers

How does 'overvoltage' affect the corrosion rate of a metal in the galvanic series?

How does the physical state of metals influence corrosion?

In what type of medium does metal corrosion occur faster according to the text?

How does humidity impact the corrosion of metals based on the text?

What determines the rate and severity of corrosion in metals according to the text?

Why does corrosion at the anodic region occur at a faster rate when dissimilar metals are in contact in a corrosive medium?

Which metal corrodes faster when in contact with copper in a medium according to the text?

What is the best example provided in the text to illustrate faster corrosion?

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