Plasma-flash Sintering: Metastable Phase Stabilization and Evidence of Ionized Species

The first demonstration of plasma-flash sintering (PFS) is presented in this work. PFS is performed under a low-pressure atmosphere that consecutively generates plasma and flash events. It is shown, by using several combined characterization techniques, that PFS stabilizes metastable phases on the s...

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Bibliographic Details
Authors: Gil González, Eva; Taibi, A.; Perejón Pazo, Antonio; Sánchez Jiménez, Pedro Enrique; Pérez Maqueda, L. A.
Format: Article
Status:Published version
Publication date:2025
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/168547
Online Access:https://hdl.handle.net/11441/168547
https://doi.org/10.1111/jace.20105
Access Level:Open access
Keyword:Anatase
Defects
Electric-field assisted sintering
Flash-sintering
Plasma
Rutile
Description
Summary:The first demonstration of plasma-flash sintering (PFS) is presented in this work. PFS is performed under a low-pressure atmosphere that consecutively generates plasma and flash events. It is shown, by using several combined characterization techniques, that PFS stabilizes metastable phases on the surface of the material, which may be partially, but not solely, attributed to the generation of oxygen vacancies, and induces the absorption of ionized species, if a reactive atmosphere is employed. Even though additional research is required to understand the fundamentals of PFS, it is evidenced its potential to be used as a material surface engineering tool, which may widen the technological capabilities of flash sintering.