A new chemical pathway towards densification of tetragonal zirconia below 900°C
Language
en
Article de revue
This item was published in
Materialia. 2022, vol. 24, p. 101479
Elsevier
English Abstract
The recent development of low temperature sintering approaches leads to promising perspectives in terms of global optimisation of functional materials and multi-materials. These new processes mobilize different densification ...Read more >
The recent development of low temperature sintering approaches leads to promising perspectives in terms of global optimisation 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-ZrO 2) 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-ZrO 2 nanostructured ceramics were thus densified up to 92-95% below 900°C.Read less <
English Keywords
chemical reactivity
nanostructured zirconia ceramics
X-ray photoelectron spectroscopy
spark plasma sintering
cold sintering process
Origin
Hal imported