Wang, Danqian;
Yue, Yanfei;
Xie, Zhichao;
Mi, Tangwei;
Yang, Siyu;
McCague, Colum;
Qian, Jueshi;
(2022)
Chloride-induced depassivation and corrosion of mild steel in magnesium potassium phosphate cement.
Corrosion Science
, 206
, Article 110482. 10.1016/j.corsci.2022.110482.
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Abstract
This study investigated the chloride-induced depassivation and corrosion of mild steel in the magnesium potassium phosphate cement (MKPC) pore solutions at different magnesia-to-phosphate (M/P) ratios via several electrochemical methods and surface characterisations. Results showed that although the pH of MKPC is much lower than that of PC, the corrosion resistance of mild steel is significantly higher, with critical chloride values in MKPC being several orders higher than that in PC. Chloride-induced corrosion resistance increases with increasing M/P ratios. Whilst both pH and HPO42-/PO43- ions influence the formation of corrosion products, the pH plays a dominant role in the corrosion resistance.
| Type: | Article |
|---|---|
| Title: | Chloride-induced depassivation and corrosion of mild steel in magnesium potassium phosphate cement |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.corsci.2022.110482 |
| Publisher version: | https://doi.org/10.1016/j.corsci.2022.110482 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Chloride-induced corrosion, Magnesium phosphate cement, Mild steel, Magnesia-to-phosphate ratio |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10154077 |
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