Reactive flash sintering of powders of four constituents into a single phase of a complex oxide in a few seconds below 700°C

Avila, Viviana; Raj, Rishi

doi:10.1111/jace.16625

Title: Reactive flash sintering of powders of four constituents into a single phase of a complex oxide in a few seconds below 700°C

Journal Article · 16 June 2019 · Journal of the American Ceramic Society

DOI: https://doi.org/10.1111/jace.16625 · OSTI ID:1559369

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Materials Science and Engineering Program, Department of Mechanical Engineering University of Colorado Boulder Boulder Colorado

Abstract Recent work on reactive flash sintering of powders of two oxides, bismuth and of iron oxide, into pure single phase bismuth ferrite, which was accomplished in a few seconds at low furnace temperatures, is expanded to four constituents, alumina, lithia, zirconia, and lanthana, to produce reasonably dense polycrystals of a predominantly single phase, cubic LLZO(Al). Transformation and sintering occur concurrently at a furnace temperature near 700°C, in ambient atmosphere, in just a few seconds. The process may simplify the preparation of complex ceramics with new chemistries and dopants, which are predicted from ab intio calculations to have special attributes, not only because the powders sinter quickly at low temperatures, but also because the need for stoichiometric powders as starting materials is obviated.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AR0000777

OSTI ID:: 1559369

Journal Information:: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 11 Vol. 102; ISSN 0002-7820

Publisher:: Wiley-BlackwellCopyright Statement

Country of Publication:: United States

Language:: English

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