@article{ART003144591},
author={Kim Sion and Asghar Kamal and Ngulimi Miguta Faustine and Seo Bum Kyoung and Roh Changhyun},
title={Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid},
journal={Carbon Letters},
issn={1976-4251},
year={2024},
volume={34},
number={8},
pages={2223-2231},
doi={10.1007/s42823-024-00808-z}
TY - JOUR
AU - Kim Sion
AU - Asghar Kamal
AU - Ngulimi Miguta Faustine
AU - Seo Bum Kyoung
AU - Roh Changhyun
TI - Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid
JO - Carbon Letters
PY - 2024
VL - 34
IS - 8
PB - Korean Carbon Society
SP - 2223
EP - 2231
SN - 1976-4251
AB - The feeder pipes of the primary cooling system in a pressurized heavy water reactor (PHWR) are composed of carbon steel SA 106 GR.B. On the surface of this structural material, corrosion oxide layers including radionuclides are formed due to the presence of active species from water decomposition products caused by radiation, as well as the high temperature and high-pressure environment. These oxide layers decrease the heat transfer efficiency of the primary cooling system and pose a risk of radiation exposure to workers and the environment during maintenance and decommissioning, making effective decontamination essential. In this study, we simulated the formation of the corrosion oxide layer on the surface of carbon steel SA 106 GR.B, characterized the formed corrosion oxide layer, and investigated the dissolution characteristics of the corrosion oxide layer using oxalic acid (OA), a commercial chemical decontamination agent. The corrosion oxide layer formed has a thickness of approximately 4 µm and consists of hematite (Fe2O3) and magnetite (Fe3O4). The carbon steel coupons with formed oxide layers were dissolved in 10 mM and 20 mM OA solutions, resulting in iron ion concentrations of 220 ppm and 276 ppm in the OA respectively. In 10 mM and 20 mM OA, the corrosion depths of the coupons were 8.93 µm and 10.22 µm, with corrosion rates of 0.39 mg/cm2·h and 0.45 mg/cm2·h, respectively. Thus, this demonstrates that higher OA concentrations lead to increased dissolution and corrosion of steel.
KW - Carbon steel SA106 Gr. B Corrosion Oxide layer Oxalic acid Chemical dissolution
DO - 10.1007/s42823-024-00808-z
ER -
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung and Roh Changhyun. (2024). Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid. Carbon Letters, 34(8), 2223-2231.
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung and Roh Changhyun. 2024, "Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid", Carbon Letters, vol.34, no.8 pp.2223-2231. Available from: doi:10.1007/s42823-024-00808-z
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung, Roh Changhyun "Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid" Carbon Letters 34.8 pp.2223-2231 (2024) : 2223.
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung, Roh Changhyun. Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid. 2024; 34(8), 2223-2231. Available from: doi:10.1007/s42823-024-00808-z
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung and Roh Changhyun. "Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid" Carbon Letters 34, no.8 (2024) : 2223-2231.doi: 10.1007/s42823-024-00808-z
Kim Sion; Asghar Kamal; Ngulimi Miguta Faustine; Seo Bum Kyoung; Roh Changhyun. Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid. Carbon Letters, 34(8), 2223-2231. doi: 10.1007/s42823-024-00808-z
Kim Sion; Asghar Kamal; Ngulimi Miguta Faustine; Seo Bum Kyoung; Roh Changhyun. Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid. Carbon Letters. 2024; 34(8) 2223-2231. doi: 10.1007/s42823-024-00808-z
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung, Roh Changhyun. Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid. 2024; 34(8), 2223-2231. Available from: doi:10.1007/s42823-024-00808-z
Kim Sion, Asghar Kamal, Ngulimi Miguta Faustine, Seo Bum Kyoung and Roh Changhyun. "Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid" Carbon Letters 34, no.8 (2024) : 2223-2231.doi: 10.1007/s42823-024-00808-z
