Experimental Investigation of FCCI Using Diffusion Couple Test Between UZr Fuel with Sb Additive and Cladding. (2nd June 2020)

• Record Type: Journal Article
• Authors: Zhuo, Weiqian; Xie, Yi; Benson, Michael T.; Yang, Qiufeng; Mariani, Robert D.; Zhang, Jinsuo
• Is Part Of: Nuclear science and engineering. Volume 194:Number 6(2020)
• Page Start: 462
• Page End: 476
• Publication Date: 2020-06-02
• Subjects: U-10Zr metallic fuel -- additive antimony -- diffusion couple tests; Nuclear energy -- Periodicals; Nuclear engineering -- Periodicals; Nuclear energy; Nuclear engineering; Periodicals; 539.705
• DOI: 10.1080/00295639.2020.1713656
• Languages: English
• ISSNs: 0029-5639

Abstract

Abstract: Alloying additions are introduced into U-Zr fuel in order to bind lanthanides (e.g., cerium) and prevent their migration to the fuel-cladding interface. Antimony (Sb) is being investigated as a candidate additive. The present study focuses on the diffusion couple behavior of U-10Zr (wt%) alloy with Sb against cladding (iron or HT9) at 640°C. The diffusion cross sections were analyzed using a scanning electron microscope and X-ray diffraction. Zr-rind was found at the interface of the fuel alloy, Sb was found to be bound in Sb-Zr precipitates or Sb-Ce precipitates, and no reaction was found between Sb precipitates and the cladding materials.