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Questions and Answers
What is the definition of corrosion?
What is the definition of corrosion?
What is an example of chemical corrosion?
What is an example of chemical corrosion?
What is dezincification?
What is dezincification?
What is electrochemical corrosion also known as?
What is electrochemical corrosion also known as?
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What is graphitic corrosion?
What is graphitic corrosion?
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Study Notes
Corrosion Overview
- Corrosion is the gradual destruction of materials, especially metals, due to chemical reactions occurring in their environment.
- It results in the deterioration of materials, leading to loss of strength and integrity.
Chemical Corrosion Example
- An example of chemical corrosion is the rusting of iron, where iron reacts with oxygen and moisture, forming iron oxide (rust).
Dezincification
- Dezincification is a specific type of corrosion that affects brass, which is an alloy of copper and zinc.
- It occurs when zinc is selectively leached from the alloy, resulting in a porous, weak structure primarily composed of copper.
Electrochemical Corrosion
- Electrochemical corrosion is also known as galvanic corrosion.
- It arises from the electrochemical reaction between two dissimilar metals in contact within an electrolyte, leading to the deterioration of the less noble metal.
Graphitic Corrosion
- Graphitic corrosion is a form of corrosion that affects cast iron, where the iron matrix is oxidized while graphite remains intact.
- This results in the loss of iron, leading to a weakening of the material, while the graphite can remain, often appearing as a black residue.
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Description
Test your knowledge of the principles of corrosion with this quiz covering definitions, types of corrosion, electrochemical cells, components of galvanic cells, standard half cells, and the electrochemical series.
