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SCC of Carbon/Low-Alloy Steels in CO-H2O Environments

SCC of Carbon/Low-Alloy Steels in CO-H2O Environments

SCC of Carbon/Low-Alloy Steels in CO-H2O Environments

(OP)
Stress corrosion cracking of carbon and low alloy steels has been documented in certain mixed concentrations of CO-CO2-H2O. All of the literature I have reviewed has explained that all 3 of these components must be present. Does anyone know if there is any documentation where the mix is just CO and H2O, with no CO2?

RE: SCC of Carbon/Low-Alloy Steels in CO-H2O Environments

I don't know how you would prevent at least some of the CO from further oxidizing to CO2.

RE: SCC of Carbon/Low-Alloy Steels in CO-H2O Environments

(OP)
Thanks metengr. As always, amazed at the resources you can pull up at your fingertips.

btrueblood, the system in question is not exposed to oxygen or air. But I was wondering indeed if CO2 could form under a chemical reaction CO + H2O --->CO2 + H2. This would then provide the necessary carbon dioxide. However, the process happens under high pressure at ambient temperature and I have the impression I need higher temperatures to get some dissoulution of the carbon monoxide.

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