Unravelling the impact of palladium on ruthenium-induced corrosion of SiC coatings in TRISO particles

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-10-28 DOI:10.1016/j.corsci.2024.112545

Kerui Wei , Junquan Lao , Han Liu , João P. Martins , Huatang Cao , Ching-Shiuan Lin , Yurou Lei , Zhiquan Kho , Alexander Eggeman , Xuzhao Liu , Matthew Smith , Philip J. Withers , Ping Xiao

引用次数: 0

Abstract

Ru and Pd are fission products released through SiC layer in TRISO fuel at high temperature. This study investigates the corrosion behaviour of Ru-Pd on SiC layers of tri-structural isotropic (TRISO) particles. Specifically, it explores the effects of Pd (strongly reactive FP) on Ru (weakly reactive FP)-induced corrosion. In Pd-Ru/SiC systems, a Ru-Pd-Si liquid phase forms at high temperatures even with minimal Pd, accelerating corrosion along SiC grain boundaries. Comparing Pd’s role in Ru/SiC and Ag/SiC systems underscores the importance of liquid phases in FP migration. A novel approach is proposed for predicting the corrosion effects of multiple FPs on SiC through enthalpic interaction analysis.

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揭示钯对 TRISO 粒子中钌诱导的碳化硅涂层腐蚀的影响

Ru 和 Pd 是 TRISO 燃料在高温下通过 SiC 层释放的裂变产物。本研究探讨了 Ru-Pd 在三结构各向同性（TRISO）颗粒的 SiC 层上的腐蚀行为。具体来说，它探讨了 Pd（强反应 FP）对 Ru（弱反应 FP）诱导腐蚀的影响。在 Pd-Ru/SiC 系统中，即使 Pd 极少，在高温下也会形成 Ru-Pd-Si 液相，从而加速 SiC 晶界的腐蚀。比较 Pd 在 Ru/SiC 和 Ag/SiC 体系中的作用，突出了液相在 FP 迁移中的重要性。通过焓相互作用分析，提出了一种预测多种 FP 对 SiC 腐蚀影响的新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.