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A new method for monitoring the redox potential of fuel salt based on the deposition of 95Nb on Hastelloy C276

  • Zhiqiang Cheng , Zhongqi Zhao , Junxia Geng , Xiaohe Wang , Jifeng Hu , Jingen Chen , Xiangzhou Cai , Wenxin Li , Qiang Dou EMAIL logo and Qingnuan Li EMAIL logo
Published/Copyright: February 15, 2021

Abstract

To develop the application of 95Nb as an indicator of redox potential for fuel salt in molten salt reactor (MSR), the specific activity of 95Nb in FLiBe salt and its deposition of 95Nb on Hastelloy C276 have been studied. Experimental results indicated that the amount of 95Nb deposited on Hastelloy C276 resulted from its chemical reduction exhibited a positive correlation with the decrease of 95Nb activity in FLiBe salt and the relative deposition coefficient of 95Nb to 103Ru appeared a well correlation with 95Nb activity in FLiBe salt. Both correlations implied that the measurement of 95Nb activity deposited on Hastelloy C276 specimen might provide a quantitative approach for monitoring the redox potential of fuel salt in MSR.


Corresponding authors: Qiang Dou and Qingnuan Li, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai201800, China; and Center of Excellence TMSR Energy System, Chinese Academy of Sciences, Shanghai201800, China, E-mail: ,
Zhiqiang Cheng and Zhongqi Zhao contributed equally to this work and considered co-first authors.

Funding source: Strategic Priority Research Program of the Chinese Academy of Sciences

Award Identifier / Grant number: XDA02030000

Funding source: Frontier Science Key Program of the Chinese Academy of Sciences

Award Identifier / Grant number: QYZDYSSW-JSC016

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was supported by the “Strategic Priority Research Program” and “Frontier Science Key Program” of the Chinese Academy of Sciences (grant nos. XDA02030000 and QYZDYSSW-JSC016).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-01-26
Accepted: 2021-01-30
Published Online: 2021-02-15
Published in Print: 2021-05-26

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