Mini Cathodically-Protected steel plate

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Discussion Overview

The discussion revolves around the effectiveness of a proposed method for cathodic protection using a steel and zinc plate setup, specifically in the presence of seawater as an electrolyte. Participants explore the feasibility and simplicity of the approach in the context of a project on cathodic protection.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether bolting a steel plate to a zinc plate without any interface material is sufficient for cathodic protection.
  • Another participant suggests that an electrolyte, such as seawater, is necessary for ion transfer between the plates.
  • A later reply confirms the presence of seawater and expresses concern about the simplicity of the proposed setup.
  • One participant compares the process to electrolysis, emphasizing the need for a conductive liquid to facilitate ion transfer.
  • Another participant mentions that the setup should be effective if it utilizes a sacrificial anode, while noting that there are other forms of cathodic protection.

Areas of Agreement / Disagreement

Participants express varying levels of confidence in the proposed method, with some suggesting it may work under the right conditions while others highlight potential oversights. No consensus is reached on the overall effectiveness of the setup.

Contextual Notes

Participants reference the necessity of an electrolyte for the cathodic protection process, but there are unresolved questions about the adequacy of the proposed method and its simplicity.

Kramjit
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Mini Cathodically-Protected steel plate...

Hi guys/gals:

I am doing a project on cathodic protection. If I have a steel and zinc plate, does bolting them together with nothing at the interface suffice as Cathodic Protection? It looks too simple to be true. So I need your help to validate the above method.

Thank you!

Kramjit
 
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You need something to trasnfer the ions between them - like sea water.
Of course if you didn't have the water you wouldn't need the protection!

Cathodic protection is simple, it's just expensive in materials and replacement effort.
 
Oh yes. I forgot to mention that the electrolyte will indeed be present (seawater). So are you saying that my set-up will be alright? Like I said, I worry that my experiment sounds too simple.

Thanks

mgb_phys said:
You need something to trasnfer the ions between them - like sea water.
Of course if you didn't have the water you wouldn't need the protection!

Cathodic protection is simple, it's just expensive in materials and replacement effort.
 
Oh yes. I forgot to mention that the electrolyte will indeed be present (seawater). So are you saying that my set-up will be alright? Like I said, I worry that my experiment sounds too simple.

Thanks

mgb_phys said:
You need something to trasnfer the ions between them - like sea water.
Of course if you didn't have the water you wouldn't need the protection!

Cathodic protection is simple, it's just expensive in materials and replacement effort.
 


I think it may be the same as the process of electrolysis that need a liquid the is conductor of electricity... like some solution to transfer the ions between steel plate and zinc plate...




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Last edited by a moderator:


You should be fine if your form of protectioon is via a sacrificial anode. There is another form of cathodic protection.
 

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