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51312-01361-Effect of Temperature to Crevice Corrosion of Austenitic and Duplex Stainless Steel in Deepwater

Product Number: 51312-01361-SG
ISBN: 01361 2012 CP
Author: Jing Wang
Publication Date: 2012
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$20.00
$20.00
With continuous exploitation of oil and gas in deepwater more and more stainless steel and Ni-based alloy have been used in subsea production system. Stainless steel is at high risk of crevice corrosion because of existence of crevice at the flange interface. Stainless steel which is used for gasket seal rings will also suffer crevice corrosion if exposed to sea water. Crevice corrosion become common for stainless steel at high temperature as a result of seawater ingress after destroy of external anti-corrosion coating. Based on this corrosion rick effect of temperature (4oC 20oC and 60oC) on initiation and propagation of crevice corrosion of stainless steel (316SS UNS S2205 and UNS S2507) is studied in this article. Crevice corrosion sensibility of stainless steel is studied by cyclic voltammetry and corrosion morphology is observed by TEM. Corrosion production is analyzed by EDS and section of stainless steel is observed by light microscope. The propagative orientation of crevice corrosion is analyzed and morphology and section of stainless steels corroded during same time are compared. The results show that UNS S2507 has a longest initial time of crevice corrosion and it has highest crevice corrosion resistance.
With continuous exploitation of oil and gas in deepwater more and more stainless steel and Ni-based alloy have been used in subsea production system. Stainless steel is at high risk of crevice corrosion because of existence of crevice at the flange interface. Stainless steel which is used for gasket seal rings will also suffer crevice corrosion if exposed to sea water. Crevice corrosion become common for stainless steel at high temperature as a result of seawater ingress after destroy of external anti-corrosion coating. Based on this corrosion rick effect of temperature (4oC 20oC and 60oC) on initiation and propagation of crevice corrosion of stainless steel (316SS UNS S2205 and UNS S2507) is studied in this article. Crevice corrosion sensibility of stainless steel is studied by cyclic voltammetry and corrosion morphology is observed by TEM. Corrosion production is analyzed by EDS and section of stainless steel is observed by light microscope. The propagative orientation of crevice corrosion is analyzed and morphology and section of stainless steels corroded during same time are compared. The results show that UNS S2507 has a longest initial time of crevice corrosion and it has highest crevice corrosion resistance.
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