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

Bensu Tunca, Thomas Lapauw, Carolien Callaert, Joke Hadermann, Remi Delville, El'ad N. Caspi, Martin Dahlqvist, Johanna Rosén, Amalraj Marshal, Konda G. Pradeep, Jochen M. Schneider, Jozef Vleugels, Konstantina Lambrinou

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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.

Original languageEnglish
Article number108704
Number of pages19
JournalCorrosion Science
Volume171
Early online date27 Apr 2020
DOIs
Publication statusPublished - 15 Jul 2020

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    Tunca, B., Lapauw, T., Callaert, C., Hadermann, J., Delville, R., Caspi, E. N., Dahlqvist, M., Rosén, J., Marshal, A., Pradeep, K. G., Schneider, J. M., Vleugels, J., & Lambrinou, K. (2020). Compatibility of Zr2AlC MAX phase-based ceramics with oxygen-poor, static liquid lead–bismuth eutectic. Corrosion Science, 171, [108704]. https://doi.org/10.1016/j.corsci.2020.108704