RUA TABORDA, Maria Isabel; MARTIN, Etienne; CHUNG, U-Chan; FOURCADE, Sébastien; LABRUGÈRE, Christine; MICHAU, Dominique; GOGLIO, Graziella; ELISSALDE, Catherine

doi:10.1016/j.mtla.2022.101479

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RUA TABORDA, Maria Isabel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MARTIN, Etienne
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CHUNG, U-Chan
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Materialia. 2022-08, vol. 24, p. 101479 (7 p.)

Elsevier

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The recent development of low temperature sintering approaches leads to promising perspectives in terms of global optimization of functional materials and multi-materials. These new processes mobilize different densification mechanisms and offer a tremendous flexibility in terms of chemical reactivity. In this context, we focus here on the densification of yttria stabilized zirconia (3Y-ZrO2) at a temperature below 900 °C combining a transient chemical reactivity induced during the Cold Sintering Process with diffusion mechanisms activated during the Spark Plasma Sintering. The chemistry is tuned in-situ through the presence of a hydrated zirconium carbonate whose role at each stage of the whole process is discussed. Tetragonal 3Y-ZrO2 nanostructured ceramics were thus densified up to 92–95% below 900 °C.< Réduire

Mots clés en anglais

Spark plasma sintering

Cold sintering process

Chemical reactivity

Nanostructured zirconia ceramics

X-ray photoelectron spectroscopy

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A new chemical pathway towards densification of tetragonal zirconia below 900 °C

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