Employing sodium alginate to improve corrosion protection of phytic acid conversion coating for steel in chloride-contaminated concrete pore solution
Year: 2024
Type: article
Abstract: Sodium alginate (SA) was used to modify phytic acid conversion coating (PACC) for reinforcing steel . The corrosion protection performance of the modified PACC was examined in chloride-contaminated concrete pore solution through electrochemical measurements and surface characterization techniques. Results show that the modified PACC significantly enhances the corrosion resistance of carbon steel . The modification effect progressively intensifies as the dosage of SA increases from 0.2 % to 0.8 %. The modified PACC on the steel surface displays the highest inhibition efficiency of 93.5 % at the dosage of 0.8 % SA. After prolonged exposure to chloride, the corrosion rate of steel with the modified PACC is 2.17 μm/a, marking a 72.8 % reduction compared to the unmodified PACC. The presence of SA effectively fills natural cracks in PACC and facilitates the formation of the modified PACC with a complex bilayer structure.
Institutions: Hohai University, Lanzhou University of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,080
OpenAlex ID: W4403225470