Steam performance of UB2/U3Si2 composite fuel pellets, compared to U3Si2 reference behaviour

JOURNAL OF NUCLEAR MATERIALS

卷:529

Article

Turner, Joel¹  Abram, Tim¹ 

[1] Univ Manchester, Nucl Fuel Ctr Excellence, Manchester, Lancs, England

关键词: Nuclear fuel;    Accident tolerant fuel;    Uranium silicide;    Uranium boride;   

DOI  :  10.1016/j.jnucmat.2019.151919

来源: Elsevier

【 摘 要 】

Uranium diboride (UB2) was produced via arc melting and mixed with U3Si2 material via cold-press and sintering. Composite materials, from 0 to 100% UB2 were placed in high temperature flowing steam and mass gain observed. It was seen that the addition of 10 wt% UB2 to U3Si2 increased the onset of reaction by 100 C degrees compared to pure U3Si2 in the same conditions. 50 wt% UB2/U3Si2 pellets maintained this increase, alongside a significant reduction in the ejection of material typically seen in U3Si2-steam reactions. From these results, a mechanism for both composite reaction and the performance of U3Si2 in steam is proposed. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

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