Inorganic Corrosion-Inhibitive Pigments for High-Temperature Alkali-activated Well Casing Foam Cement

Technical Report · Fri Nov 14 00:00:00 EST 2014

DOI:https://doi.org/10.2172/1183248· OSTI ID:1183248

Sugama, T. ^[1]; Pyatina, T. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)

This study evaluates inorganic pigments for improving carbon steel (CS) brine-corrosion protection by the sodium metasilicate-activated calcium aluminate cement/Fly Ash blend at 300°C. Calcium borosilicate (CBS) and zinc phosphate, significantly improved CS corrosion-protection by decreasing cement’s permeability for corrosive ions and inhibiting anodic corrosion. An amorphous Na₂O-Al₂O₃-SiO₂-H₂O phase tightly attached to CS surface formed at 300oC in CBS-modified cement pore solution. The corrosion rate of the CS covered with this phase was nearly 4-fold lower than in the case of nonmodified cement pore solution where the major phase formed on the surface of CS was crystalline analcime.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: SC00112704
• OSTI ID: 1183248
• Report Number(s): BNL-107118-2014-IR; R&D Project: 20437
• Country of Publication: United States
• Language: English

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