GATE XE · 2021 · XE-C
Question 22: Degradation of Materials
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Question 22
XE-CNAT2 marksNeeds review
When a metal (M) is immersed in de-aerated acid electrolyte, it polarizes anodically by 0.4 V. The M/M
exchange current density is 10
A m
and Tafel slope is 0.1 V/decade for the anodic reaction. Assume that corrosion is uniform and, anodic and cathodic reactions are under activation control. The rate of metal dissolution in A m
is ________ (round off to 1 decimal place)Log in to check the answer
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2021XE-C
GATE XE 2021 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-C
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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