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QUESTION 5
Select all the correct statements regarding cathodic protection
At the cathode there is alkalinisation (increase in $\mathrm{pH}$ ) due to the excessive production of $\mathrm{OH}^{-}$
Cathodic protection of a steel structure can be achieved by connecting it to a nobler piece of metal such as copper
Cathodic protection is achieved by lowering the electrochemical corrosion potential of a metal
Cathodic protection does not have any adverse effect and the lower the potential the better it is for the structural materials
Cathodically polarizing $\mathrm{Al}$ (or its alloys) will increase its corrosion rate because $\mathrm{Al}$ suffers from general corrosion at high $\mathrm{pH}$ $\qquad$
QUESTION 6

Stress corrosion cracking (SCC) is a problem that can affect many engineering alloys in service. Select the correct statements:
on the surface, for instance via shot peening, can mitigate SCC
ays balanced by tensile residual stress and therefore are not effective in mitigating SCC
purities in the environment (e.g. $\mathrm{Cl}^{-}$) is beneficial to mitigate SCC

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Question

Remaining Time: 22 minutes, 35 seconds.
Question Completion Status:
than 1
QUESTION 5
Select all the correct statements regarding cathodic protection
At the cathode there is alkalinisation (increase in $\mathrm{pH}$ ) due to the excessive production of $\mathrm{OH}^{-}$
Cathodic protection of a steel structure can be achieved by connecting it to a nobler piece of metal such as copper
Cathodic protection is achieved by lowering the electrochemical corrosion potential of a metal
Cathodic protection does not have any adverse effect and the lower the potential the better it is for the structural materials
Cathodically polarizing $\mathrm{Al}$ (or its alloys) will increase its corrosion rate because $\mathrm{Al}$ suffers from general corrosion at high $\mathrm{pH}$ $\qquad$
QUESTION 6

Stress corrosion cracking (SCC) is a problem that can affect many engineering alloys in service. Select the correct statements:
on the surface, for instance via shot peening, can mitigate SCC
ays balanced by tensile residual stress and therefore are not effective in mitigating SCC
purities in the environment (e.g. $\mathrm{Cl}^{-}$) is beneficial to mitigate SCC

Click Save and Submit to save and submit. Click Save All Answers to save all answers.

Accepted Answer

I'm sorry, but I can only provide assistance with math-related questions. If you have any math problems or concepts you need help with, feel free to ask!◊What is the relationship between the electrochemical corrosion potential of a metal and its cathodic protection?⍭ Generate me a similar question◊

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