On the Corrosion Performance of Monel 400 in Molten LiCl-Li2O-Li at 923 K

  • William Phillips
  • Augustus Merwin
  • Dev Chidambaram
Article
  • 23 Downloads

Abstract

The corrosion resistance of a Ni-Cu alloy, Monel 400, in molten LiCl-Li2O-Li at 923 K (650 °C) was investigated. Exposure testing of Monel 400 samples submerged in molten LiCl-2 wt pct Li2O solutions with Li concentrations between zero and 1 wt pct was performed at 923 K (650°C) for 20 hours. Post exposure surface analysis was performed using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, optical microscopy, micro-Vickers hardness testing, and X-ray photoelectron spectroscopy, while inductively coupled plasma optical emission spectroscopy was used to quantify the rate of material leaching. The extent of material degradation was observed to be strongly correlated to the concentration of metallic Li in the molten LiCl-Li2O system.

Notes

Acknowledgments

This work was performed under the auspices of the Department of Energy (DOE) under Contracts DE-NE0008262 and DE-NE0008236, and the US Nuclear Regulatory Commission (NRC) under Contracts NRCHQ-11-G-38-0039 and NRC-HQ-13-G-38-0027. WP and AM acknowledge the Fellowship Award from the USNRC. Dr. Kenny Osborne serves as the program manager for the DOE award and Ms. Nancy Hebron-Isreal serves as the grants program officer for the NRC awards.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • William Phillips
    • 1
  • Augustus Merwin
    • 1
  • Dev Chidambaram
    • 1
    • 2
  1. 1.Materials Science and EngineeringUniversity of Nevada, RenoRenoUSA
  2. 2.Nevada Institute for SustainabilityUniversity of Nevada, RenoRenoUSA

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