Ultrafast high-temperature sintering of yttria-stabilized zirconia in reactive N2 atmosphere
So far, ultrafast high-temperature sintering (UHS) has always been carried out in an inert environment. In the present work, we investigated UHS of 3YSZ in nitrogen and argon atmosphere showing that “ the atmosphere matters” . Highly densified samples can be obtained in both environments but densification and grain growth are significantly retarded in N 2 . Moreover, the phase evolution is strongly atmosphere-dependent with the samples treated in Ar remaining tetragonal and those treated under N 2 progressively reducing their tetragonality, eventually converting into cubic zirconia and rock salt oxynitride. The results can be explained by the incorporation of nitrogen within the ZrO 2 lattice. Electrochemical impedance spectroscopy demonstrates that while the ionic bulk conductivity are marginally influenced by the sintering atmosphere, the grain boundaries' capacitive behavior strongly changes. After UHS under 30 A, excellent ionic conductors were obtained without substantial grain boundary-blocking effects.
Authors
- Mauro Bortolotti (ORCID: https://orcid.org/0000-0002-7213-6316)
- Vincenzo M. Sglavo (ORCID: https://orcid.org/0000-0001-9133-7204)
- Levent Karacasulu (ORCID: https://orcid.org/0000-0003-4710-2816)
- Michele Cassetta (ORCID: https://orcid.org/0000-0003-2078-655X)
- Claude Estournès (ORCID: https://orcid.org/0000-0001-8381-8454)
- Cekdar Vakifahmetoglu
- Thomas Hérisson de Beauvoir (ORCID: https://orcid.org/0000-0003-3592-9680)
- Charles Manière (ORCID: https://orcid.org/0000-0003-0073-9772)
- Mattia Biesuz (ORCID: https://orcid.org/0000-0002-4338-4177)
- Emanuele De Bona (ORCID: https://orcid.org/0000-0001-5133-5108)
Institutions
- Izmir Institute of Technology (TR)
- Centre National de la Recherche Scientifique (FR)
- Université Toulouse III - Paul Sabatier (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- University of Trento (IT)
- Normandie Université (FR)
- Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux (FR)
- Laboratoire de Cristallographie et Sciences des Matériaux (FR)
- National Interuniversity Consortium of Materials Science and Technology (IT)
- Université de Caen Normandie (FR)
Publication Details
- Journal
- Journal of the European Ceramic Society
- Published
- 2024-08-30
- DOI
- https://doi.org/10.1016/j.jeurceramsoc.2024.116879
- Citations
- 4
- Primary Topic
- Advanced ceramic materials synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.93
Funders
- European Commission
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu