Compatibility of Zr2AlC MAX phase-based ceramics with oxygen-poor, static liquid lead-bismuth eutectic

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Authors

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • UA - Universiteit Antwerpen
  • RWTH - Aachen University
  • NNRC - Negev Nuclear Research Center - Israel
  • Li.U - Linköping University

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Abstract

This work investigates the compatibility of Zr2AlC MAX phase-based ceramics with liquid LBE, and proposes a mechanism to explain the observed local Zr2AlC/LBE interaction. The ceramics were exposed to oxygen-poor (CO  2.210-10 mass%), static liquid LBE at 500°C for 1000 h. A new Zr2(Al,Bi,Pb)C MAX phase solid solution formed in-situ in the LBE-affected Zr2AlC grains. Out-of-plane ordering was favorable in the new solid solution, whereby A-layers with high and low-Bi/Pb contents alternated in the crystal structure, in agreement with first-principles calculations. Bulk Zr2(Al,Bi,Pb)C was synthesized by reactive hot pressing to study the crystal structure of the solid solution by neutron diffraction.

Details

Original languageEnglish
Article number108704
Pages (from-to)1-19
Number of pages19
JournalCorrosion Science
Volume171
DOIs
Publication statusPublished - 15 Jul 2020

Keywords

  • Ceramic, MAX phases, TEM, STEM, Liquid metal corrosion, Lead–bismuth eutectic (LBE)

ID: 6826902