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Effect of hydrogen on electrochemical behavior of additively manufactured 316L in pressurized water reactor primary water

  • Martin Bojinov
  • , Timo Saario
  • , Yanling Ge
  • , Litao Chang
  • , Zaiqing Que*
  • *Corresponding author for this work
  • University of Chemical Technology and Metallurgy
  • Shanghai Institute of Applied Physics (SINAP-CAS)

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The electrochemical behavior of laser powder bed fusion (LPBF) 316 L stainless steel subject to different heat-treatments (solution annealing and hot isostatic pressing) is compared to nuclear-grade wrought 316 L in pressurized water reactor primary water at 288 °C (with and without dissolved hydrogen) using current-time transients, cyclic voltammetry and electrochemical impedance spectroscopy (EIS). Analysis of spectra by the Mixed-Conduction Model revealed slower corrosion rates of LPBF 316 L than wrought 316 L, the effect being more pronounced in the presence of dissolved hydrogen. The characteristics of the barrier layer and the oxide film/coolant interface were irreversibly altered upon removal of dissolved hydrogen.
Original languageEnglish
Article number111557
JournalCorrosion Science
Volume224
DOIs
Publication statusPublished - Nov 2023
MoE publication typeA1 Journal article-refereed

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

Keywords

  • Additive manufacturing
  • Corrosion
  • Dissolved hydrogen
  • High-temperature water
  • Laser powder bed fusion
  • Stainless steel

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