High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles
Abstract Aging power plants must cycle more frequently as the sector shifts to renewables, increasing susceptibility to contamination, localized corrosion, and tubing failures. Herein, we examine how high-resolution X-ray computed tomography can provide new insights into the relationship between loc...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | npj Materials Degradation |
| Online Access: | https://doi.org/10.1038/s41529-025-00551-4 |
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| author | Akash Ganesan Renaldo Springer Andrew Howell Brad Burns Derek M. Hall |
| author_facet | Akash Ganesan Renaldo Springer Andrew Howell Brad Burns Derek M. Hall |
| author_sort | Akash Ganesan |
| collection | DOAJ |
| description | Abstract Aging power plants must cycle more frequently as the sector shifts to renewables, increasing susceptibility to contamination, localized corrosion, and tubing failures. Herein, we examine how high-resolution X-ray computed tomography can provide new insights into the relationship between localized, general corrosion rates and boiler water chemistries. The following study examines how chloride and sulfate contaminants impact carbon steel corrosion at 300 °C and 12.4 MPa, which are typical conditions in utility boilers and evaporators. The localized corrosion rates caused by sulfate and chloride contamination were, on average, 2.69 and 5.55 mm y−1, respectively, an order of magnitude larger than the uniform corrosion rates, 0.16 and 0.40 mm y−1 at the same conditions. Chloride caused a few deep pits, whereas sulfate tended to form more shallow pits during the same timeframe. This study highlights the need to detect and quantify localized corrosion in boiler tubing and the effectiveness of X-ray computed tomography in assessing corrosion rates. |
| format | Article |
| id | doaj-art-02040a4705e042cf869a63232f84895c |
| institution | Kabale University |
| issn | 2397-2106 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Materials Degradation |
| spelling | doaj-art-02040a4705e042cf869a63232f84895c2025-02-09T12:48:37ZengNature Portfolionpj Materials Degradation2397-21062025-02-01911810.1038/s41529-025-00551-4High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cyclesAkash Ganesan0Renaldo Springer1Andrew Howell2Brad Burns3Derek M. Hall4Department of Mechanical Engineering, Pennsylvania State UniversityPacific Northwest National LaboratoryElectric Power Research InstituteElectric Power Research InstituteDepartment of Mechanical Engineering, Pennsylvania State UniversityAbstract Aging power plants must cycle more frequently as the sector shifts to renewables, increasing susceptibility to contamination, localized corrosion, and tubing failures. Herein, we examine how high-resolution X-ray computed tomography can provide new insights into the relationship between localized, general corrosion rates and boiler water chemistries. The following study examines how chloride and sulfate contaminants impact carbon steel corrosion at 300 °C and 12.4 MPa, which are typical conditions in utility boilers and evaporators. The localized corrosion rates caused by sulfate and chloride contamination were, on average, 2.69 and 5.55 mm y−1, respectively, an order of magnitude larger than the uniform corrosion rates, 0.16 and 0.40 mm y−1 at the same conditions. Chloride caused a few deep pits, whereas sulfate tended to form more shallow pits during the same timeframe. This study highlights the need to detect and quantify localized corrosion in boiler tubing and the effectiveness of X-ray computed tomography in assessing corrosion rates.https://doi.org/10.1038/s41529-025-00551-4 |
| spellingShingle | Akash Ganesan Renaldo Springer Andrew Howell Brad Burns Derek M. Hall High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles npj Materials Degradation |
| title | High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| title_full | High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| title_fullStr | High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| title_full_unstemmed | High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| title_short | High-resolution X-ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| title_sort | high resolution x ray computerized tomography to characterize localized corrosion rates of carbon steel in contaminated steam cycles |
| url | https://doi.org/10.1038/s41529-025-00551-4 |
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