EFFECT OF CATHODIC PROTECTION ON CORROSION OF X-52 PIPELINE STEEL UNDER DISBONDED COATING

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FATEHI A.; ESLAMI A.; GOLOZAR M.A.; KAVIAN A.; TAVOOSI S.D.; REISI K.

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Journal: SCIENCE AND ENGINEERING CORROSION Year:2016 | Volume:6 | Issue:11 (21) Page(s): 55-67

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Title

EFFECT OF CATHODIC PROTECTION ON CORROSION OF X-52 PIPELINE STEEL UNDER DISBONDED COATING

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Keywords

DISBONDED COATINGQ2

CATHODIC PROTECTIONQ2

CORROSIONQ2

PIPELINE STEELQ2

Abstract

This study investigates the effect of CATHODIC PROTECTION level, on CORROSION of X-52 PIPELINE STEEL under simulated coating disbondment. In this regard, an experimental setup which could simulate the effect of different levels of CATHODIC PROTECTION (CP) on CORROSION under DISBONDED COATING was built. Then using C2 solution (which is a solution with near-neutral pH that CO2/N2 is purged in it) coupons made from X-52 PIPELINE STEEL were placed under the simulated coating disbondment. Results showed with increasing the level of CATHODIC PROTECTION under simulated coating disbondment the depth of protection increased, while CORROSION decreased. The pH changes under the simulated coating disbondment was a function of level of CP and also the distance from the disbanded coating Open Mouth. CATHODIC PROTECTION level was increased slightly, by past the time. CORROSION rate when applying a CP of -750 mVSCE was close to that when no CP was applied (OCP). This was explained by the more acidic condition being formed locally at these points. Microscopic figures where in accordance with the weight loss measurements and showed both uniform and localized CORROSION occurring under the simulated coating disbondment.

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APA: Copy

FATEHI, A., ESLAMI, A., GOLOZAR, M.A., KAVIAN, A., TAVOOSI, S.D., & REISI, K.. (2016). EFFECT OF CATHODIC PROTECTION ON CORROSION OF X-52 PIPELINE STEEL UNDER DISBONDED COATING. SCIENCE AND ENGINEERING CORROSION, 6(11 (21)), 55-67. SID. https://sid.ir/paper/261764/en

Vancouver: Copy

FATEHI A., ESLAMI A., GOLOZAR M.A., KAVIAN A., TAVOOSI S.D., REISI K.. EFFECT OF CATHODIC PROTECTION ON CORROSION OF X-52 PIPELINE STEEL UNDER DISBONDED COATING. SCIENCE AND ENGINEERING CORROSION[Internet]. 2016;6(11 (21)):55-67. Available from: https://sid.ir/paper/261764/en

IEEE: Copy

A. FATEHI, A. ESLAMI, M.A. GOLOZAR, A. KAVIAN, S.D. TAVOOSI, and K. REISI, “EFFECT OF CATHODIC PROTECTION ON CORROSION OF X-52 PIPELINE STEEL UNDER DISBONDED COATING,” SCIENCE AND ENGINEERING CORROSION, vol. 6, no. 11 (21), pp. 55–67, 2016, [Online]. Available: https://sid.ir/paper/261764/en

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