Plasma‐flash sintering: Metastable phase stabilization and evidence of ionized species

Author:

Gil‐González Eva12ORCID,Taibi Ahmed13ORCID,Perejón Antonio14ORCID,Sánchez‐Jiménez Pedro E.1ORCID,Pérez‐Maqueda Luis A.1ORCID

Affiliation:

1. Instituto de Ciencia de Materiales de Sevilla C. S. I. C.‐Universidad de Sevilla Sevilla Spain

2. Departamento de Ingeniería Química Universidad de Sevilla Escuela Politécnica Superior Sevilla Spain

3. Département de Génie des Procédés Université 8 Mai 1945 Guelma Guelma Algeria

4. Departamento de Química Inorgánica Facultad de Química Universidad de Sevilla Sevilla Spain

Abstract

AbstractThe 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.

Funder

Ministerio de Ciencia e Innovación

Universidad de Sevilla

Publisher

Wiley

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