Galvanic corrosion
Galvanic corrosion
(OP)
Hi
What possible condition would be required to enable galvanic corrosion in a deaerated environment?
I'm looking at a join between duplex and carbon steel which has condensed water with dissolved CO2 and H2S.
Is there a possibility of the combination of the two dropping the pH to make galvanic corrosion a credible threat through hydrogen evolution off of the Duplex?
Conditions
90C
10 barg
What possible condition would be required to enable galvanic corrosion in a deaerated environment?
I'm looking at a join between duplex and carbon steel which has condensed water with dissolved CO2 and H2S.
Is there a possibility of the combination of the two dropping the pH to make galvanic corrosion a credible threat through hydrogen evolution off of the Duplex?
Conditions
90C
10 barg





RE: Galvanic corrosion
RE: Galvanic corrosion
RE: Galvanic corrosion
Is this a mechanical joint? Like a tight crevice? The steel will corrode, just how fast is the question.
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Plymouth Tube
RE: Galvanic corrosion
The CO2 is only 0.12 mol% and the h2s is 100 ppm.
RE: Galvanic corrosion
RE: Galvanic corrosion
In summary, yes you have some reason to be concerned, even though it's deoxygenated.
RE: Galvanic corrosion