| Title | In situ synchrotron X-ray diffraction study of scale formation during CO 2 corrosion of carbon steel in sodium and magnesium chloride solutions |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Ingham, B., Ko M., Laycock N., Burnell J., Kappen P., Kimpton J.A., and Williams D.E. |
| Journal | Corrosion Science |
| Volume | 56 |
| Pagination | 96 - 104 |
| Date Published | 2012 |
| ISSN | 0010938X (ISSN) |
| Keywords | Anodic dissolution, Carbon dioxide, Carbon steel, Corrosion, Corrosion products, Critical supersaturation, In-situ synchrotrons, Iron ores, Magnesium, Magnesium chloride solution, NaCl solution, Scale formation, Scanning electron microscopy, Sodium, Sodium chloride, Supersaturation, Surface scale, Synchrotron radiation, Synchrotrons, X ray diffraction |
| Abstract | In situ synchrotron X-ray diffraction was used to follow the formation of corrosion products on carbon steel in CO 2 saturated NaCl solution and mixed NaCl/magnesium chloride (MgCl 2) at 80°C. Siderite (FeCO 3) was the only phase formed in NaCl solution, while Fe(OH) 2CO 3 was also detected when MgCl 2 was present. The proposed model is that siderite precipitation, occurring once the critical supersaturation was exceeded within a defined boundary layer, caused local acidification which accelerated the anodic dissolution of iron. The current fell once a complete surface scale was formed. It is suggested that MgCl 2 addition decreased the required critical supersaturation for precipitation. © 2011 Elsevier Ltd. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84855863761&partnerID=40&md5=38ce3331749d52dc1d39639d600490ad |
| DOI | 10.1016/j.corsci.2011.11.017 |
