Tribocorrosion in nitric acid of Zr alloy, Ti alloy, and 310 SS used for reprocessing of spent nuclear fuel

Jingyi Min, Xian Zong Wang, Yanfei Wang, Yang Bai, Sandrick Admire Sabola, Weijia Gong, Long Wang, Jinshan Li, Zhongkui Li

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The tribocorrosion behavior of the three representative dissolver materials, namely zirconium (Zr) alloy, 310 stainless steel (SS), and titanium (Ti) alloy in HNO3 was systematically investigated by SEM, XPS, and Nanoindentation. The results revealed that Zr alloy possesses high corrosion resistance but a less favorable tribocorrosion resistance, whereas 310 SS presents a comparatively better tribocorrosion resistance but insufficient corrosion resistance. Moreover, both the coefficient of friction and wear loss of all three alloys were decreased at 0.8 V compared to −0.8 V, demonstrating an antagonistic effect of corrosion on wear, attributed to the lubrication and hardness enhancement of oxide layers. The present work offers a new perspective on the tribocorrosion behavior of continuous dissolvers used for reprocessing spent nuclear fuel.

Original languageEnglish
Article number110184
JournalTribology International
Volume201
DOIs
StatePublished - Jan 2025

Keywords

  • Antagonistic effect
  • Nitric acid grade stainless steel
  • Reprocessing dissolver
  • Ti alloys
  • Tribocorrosion
  • Zirconium alloys

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