| Title |
Effect of Vapor Deposition on the Interdiffusion Behavior between the Metallic Fuel and Clad Material |
| Authors |
김준환(Jun Hwan Kim); 이병운(Byoung Oon Lee); 이찬복(Chan Bock Lee); 지승현(Seung Hyun Jee); 윤영수(Young Soo Yoon) |
| DOI |
https://doi.org/10.3365/KJMM.2011.49.7.549 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
metals; vapor deposition; diffusion; scamning electron microscopy; eutectic |
| Abstract |
This study aimed to evaluate the performance of diffusion barriers in order to prevent fuel-cladding chemical interaction (FCCI) between the metallic fuels and the cladding materials, a potential hazard for nuclear fuel in sodium-cooled fast reactors. In order to prevent FCCI, Zr or V metal is deposited on the ferriticmartensitic stainless steel surface by physical vapor deposition with a thickness up to 5㎛. The diffusion couple tests using uranium alloy (U-10Zr) and a rare earth metal such as Ce-La alloy and Nd were performed at temperatures between 660~800℃. Microstructural analysis using SEM was carried out over the coupled specimen. The results show that significant interdiffusion and an associated eutectic reaction ocurred in the specimen without a diffusion barrier. However, with the exception of the local dissolution of the Zr layer in the Ce-La alloy, the specimens deposited with Zr and V exhibited superior eutectic resistance to the uranium alloy and rare earth metal. |