Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Effect of Vapor Deposition on the Interdiffusion Behavior between the Metallic Fuel and Clad Material

금속연료-피복재 상호확산 거동에 미치는 기상증착법의 영향

  • Kim, Jun Hwan (Next Generation Fuel Development Division, Korea Atomic Energy Research Institute) ;
  • Lee, Byoung Oon (Next Generation Fuel Development Division, Korea Atomic Energy Research Institute) ;
  • Lee, Chan Bock (Next Generation Fuel Development Division, Korea Atomic Energy Research Institute) ;
  • Jee, Seung Hyun (Department of Materials Science and Engineering, Yonsei University) ;
  • Yoon, Young Soo (Department of Materials Science and Engineering, Yonsei University)
  • 김준환 (한국원자력연구원 차세대핵연료기술개발부) ;
  • 이병운 (한국원자력연구원 차세대핵연료기술개발부) ;
  • 이찬복 (한국원자력연구원 차세대핵연료기술개발부) ;
  • 지승현 (연세대학교 신소재공학과) ;
  • 윤영수 (연세대학교 신소재공학과)
  • Received : 2011.01.17
  • Published : 2011.07.25
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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 ferritic-martensitic stainless steel surface by physical vapor deposition with a thickness up to $5{\mu}m$. 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$^{\circ}C$. 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.

Keywords

Acknowledgement

Grant : 핵연료핵심기반기술 개발

Supported by : 교육과학기술부

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