http://www.cnr.it/ontology/cnr/individuo/prodotto/ID211866
XPS INVESTIGATION ON THE CORROSION BEHAVIOR OF 13CR-MARTENSITIC STAINLESS-STEEL IN CO2-H2S-CL- ENVIRONMENTS (Articolo in rivista)
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- XPS INVESTIGATION ON THE CORROSION BEHAVIOR OF 13CR-MARTENSITIC STAINLESS-STEEL IN CO2-H2S-CL- ENVIRONMENTS (Articolo in rivista) (literal)
- Anno
- 1989-01-01T00:00:00+01:00 (literal)
- Alternative label
G. FIERRO, G.M. INGO, F. MANCIA (1989)
XPS INVESTIGATION ON THE CORROSION BEHAVIOR OF 13CR-MARTENSITIC STAINLESS-STEEL IN CO2-H2S-CL- ENVIRONMENTS
in Corrosion (Houston, Tex.); National Association of Corrosion Engineers, Houston (Stati Uniti d'America)
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- G. FIERRO, G.M. INGO, F. MANCIA (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- G. FIERRO [1], G.M. INGO [2], F. MANCIA [1]
[1] CTR SVILUPPO MAT SPA,I-00100 ROMA EUR,ITALY
[2] CNR,IST TEORIA & STRUTTURA ELETTR,I-00016 ROME,ITALY (literal)
- Titolo
- XPS INVESTIGATION ON THE CORROSION BEHAVIOR OF 13CR-MARTENSITIC STAINLESS-STEEL IN CO2-H2S-CL- ENVIRONMENTS (literal)
- Abstract
- The corrosion behavior of 13Cr-martensitic stainless steel was investigated in CO2-H2S-Cl- environments typical of oil and gas wells under different CO2 and H2S partial pressures, with an NaCl content of 50 g/L, pH = 2.7 and 4.8, T = 80°C. The 13Cr was highly corrosion resistant to CO2-induced phenomena (general corrosion and carbonate stress corrosion cracking [SCC]), while the presence of H2S resulted in high sulfide stress corrosion cracking (SSCC) susceptibility and high corrosion rates. The CO2 in CO2-H2S-Cl- systems inhibited general corrosion and SSCC phenomena by favoring the formation of a protective film. X-ray photoelectron spectroscopy analysis of the films grown in different environmental conditions revealed that CO2 favors the growth of a Cr oxide-rich protective film with a low Fe oxide-sulfide content; the presence of H2S favors the formation of less protective Fe sulfide- and Fe oxide-rich layers. An index of protectiveness Ip = Cr3+/(Cr3+ + Feox) is defined and related to the environmental parameter EH(2)S,CO(2) = pCO2/pH2S + pCO2 and to the actual corrosion rates. (literal)
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