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Pitting Corrosion

Pitting corrosion is a localized form of corrosion by which pits (small holes) are produced in the metal. Pitting is considered to be more of a threat than uniform corrosion damage because it is more difficult to detect, predict and design against. A small, narrow pit with minimal overall metal loss can lead to the failure of the pipe/vessel. This section contains reports targeted to addressing pitting corrosion.


 
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Experimental Studies on Pitting of 410 Stainless Steel in Seawater and Condensate with CO2
Samples of 410 stainless steel were exposed to aerated and deaerated solutions of artificial sea water and distilled water, with and without packer fluid additions, with a CO2 atmosphere. Pitting rates were determined from autoclave exposures, and electrochemical parameters were obtained from potentiodynamic polarization curves. The studies showed that in deaerated solutions, packer fluid had a mild inhibiting effect on liquid phase pitting in both seawater and distilled water. Packer fluid inc...
 
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        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
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Ammonium Bisulfite Oxygen Scavenger on C-276, 625 & 316L
This report provides a technical opinion on the use of ammonium bisulfite oxygen scavenger in conjunction with stainless and nickel base piping . The pipe in question is that which will be used to inject a Brine as part of a reclamation project. Little data exist on the specific effects of ammonium bisulfite on corrosion of stainless steels. Removal of oxygen is know to be beneficial to prevent corrosion of steels, however, its effect on stainless materials could be detrimental. Because of this ...
 
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        This report is available for download to corporate users only at this time and will be soon made available for individual purchase.
 
     
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