NSUF 23-1879: Dual Ion Beam Irradiation and Post-Irradiation-Examinations of Alumina Coating on Stainless Steel
Development of high-performance nuclear components is a crucial objective to achieve the lifetime extension of the existing nuclear fleet and boost the deployment of emerging advanced reactor technologies. Austenitic stainless steels, particularly type 316, have been used extensively as a structural material for nuclear reactors because of their relatively low cost and high corrosion resistance, excellent processability, and high temperature stability. However, they suffer from severe corrosion attack in liquid metals and molten salts above 500oC. To improve their corrosion resistance, surface modification of the steel surface with Al2O3 is promising. Therefore, there is a strong need to evaluate the irradiation tolerance of Al-based coatings. For this purpose, the proposed project is designed to perform the irradiation of Al2O3-coating formed on stainless steel 316L through a combined electrodeposition and subsequent thermal treatment approach, and to conduct post-irradiation-examination (PIE) studies. The dual beam high-dose irradiation based on aluminum ions and helium ions, is likely to produce significant structural changes within the coating layer and across the coating-substrate interface. The formation of dislocation loops, cavities, or component precipitation, and the mechanical property changes of the samples can be disclosed through the advanced characterization of the control sample and irradiated samples with state-of-the-art techniques. Furthermore, the changes of the corrosion resistance to corrosive media for the irradiated samples will also be evaluated in this project.
Additional Info
| Field | Value |
|---|---|
| Abstract | Development of high-performance nuclear components is a crucial objective to achieve the lifetime extension of the existing nuclear fleet and boost the deployment of emerging advanced reactor technologies. Austenitic stainless steels, particularly type 316, have been used extensively as a structural material for nuclear reactors because of their relatively low cost and high corrosion resistance, excellent processability, and high temperature stability. However, they suffer from severe corrosion attack in liquid metals and molten salts above 500oC. To improve their corrosion resistance, surface modification of the steel surface with Al2O3 is promising. Therefore, there is a strong need to evaluate the irradiation tolerance of Al-based coatings. For this purpose, the proposed project is designed to perform the irradiation of Al2O3-coating formed on stainless steel 316L through a combined electrodeposition and subsequent thermal treatment approach, and to conduct post-irradiation-examination (PIE) studies. The dual beam high-dose irradiation based on aluminum ions and helium ions, is likely to produce significant structural changes within the coating layer and across the coating-substrate interface. The formation of dislocation loops, cavities, or component precipitation, and the mechanical property changes of the samples can be disclosed through the advanced characterization of the control sample and irradiated samples with state-of-the-art techniques. Furthermore, the changes of the corrosion resistance to corrosive media for the irradiated samples will also be evaluated in this project. |
| Award Announced Date | 2023-02-08T10:49:43.937 |
| Awarded Institution | None |
| Facility | None |
| Facility Tech Lead | Lin Shao, Yaqiao Wu |
| Irradiation Facility | Accelerator Laboratory |
| PI | Junhua Jiang |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 4567 |