Ceramics International: Expanding the scope of multiphase-flash sintering: Multi-dogbone configurations and reactive processes

 

Ceramics International

Volume 50, Issue 14, 15 July 2024, Pages 25210-25215

 

 

Expanding the scope of multiphase-flash sintering: Multi-dogbone configurations and reactive processes

A.F. Manchón-Gordón a
, S. Molina-Molina a, A. Perejón a b, A. Alcalde-Conejo a, P.E. Sánchez-Jiménez a b, L.A. Pérez-Maqueda a

a
    Instituto de Ciencia de Materiales de Sevilla, ICMSE CSIC-Universidad de Sevilla, C. Américo Vespucio 49, Sevilla, 41092, Spain

b
    Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain

Received 1 March 2024, Revised 5 April 2024, Accepted 19 April 2024, Available online 20 April 2024, Version of Record 3 June 2024.

 

Abstract

In this work, we have expanded the possibilities of the multiphase-flash sintering (MPFS) technique by investigating several configurations that involve multiple dogbone specimens (ranging from 1 to 3) and multiple phases (also ranging from 1 to 3). Unlike the traditional MPFS approach using complex 3D or cylindrical samples, this new method allows for a direct comparison with the established conventional flash sintering technique. Our experimental results with dense 8-mol% Yttria-stabilized zirconia demonstrate a significant reduction in the onset temperature as the number of phases and dogbones increases. Building on these findings, we achieved the preparation of pure bulk specimens of SrFe₁₂O₁₉ for the first time through reactive multiphase-flash sintering.

 

https://www.sciencedirect.com/science/article/pii/S027288422401647X