Journal
CORROSION SCIENCE
Volume 145, Issue -, Pages 307-319Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2018.10.011
Keywords
Stainless steel; TEM; Polarization; Scale film; High temperature corrosion
Funding
- National Natural Science Foundation of China [U1460202]
- National program for the Young Top-notch Professionals
- Fundamental Research Funds for the Central Universities [N170205002]
- Key Laboratory of Superlight Material and Surface Technology (Harbin Engineering University), Ministry of Education, P.R. of China
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The influence of rotation speed on the scale film and pitting mechanism of HP-13Cr SS in high temperature ( > 180 degrees C), high salinity (Cl- concentration > 60,000 mg/L) and high CO2 pressure ( > 4 MPa) oilfield environment was investigated using surface analysis and electrochemical techniques. The results delineated rotation speed decreased the mechanical properties and volume fraction of the amorphous Cr(OH)(3)(s) of the scale film. As a result, rotation speed increased the both nucleation susceptibility and growth probability of pitting, the serious pitting corrosion occurred and the geometry changed to shallow-disk shape.
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