Chemistry
Grade-10
Easy
Question
By adding chromium to steel, which of the following property is enhanced?
- Resistance to corrosion
- Electrical characteristics
- Magnetic property
- Ductility
Hint:
Chromium form a stable passivation layer.
The correct answer is: Resistance to corrosion
- By adding chromium to steel, its resistance to corrosion can be enhanced, creating stainless steel, while adding silicon will alter its electrical characteristics, producing silicon steel.
- Corrosion resistivity was improved for high Cr content (>24 mass%) stainless steel because it is considered to form a stable passivation layer.
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