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Title: Field assisted sintering of electro-conductive ZrO2-based composites
Authors: Vanmeensel, Kim ×
Laptev, Alexander
Van der Biest, Omer
Vleugels, Jef #
Issue Date: 2007
Publisher: Elsevier Science Publishers
Series Title: Journal of the European Ceramic Society vol:27 issue:2-3 pages:979-985
Abstract: In order to reveal the fundamentals of the field assisted sintering technique (FAST), also known as spark plasma sintering (SPS), the evolution of the current density and temperture distribution in the punch-die-sample set-up during FAST of ZrO2-TiN powder mixtures was modeled by finite element calculations supported by in situ measured electrical and thermal input data. The thermal and electrical properties of partially sintered composite powder compacts were estimated using theoretical mixture rules, allowing to calculate the current density and temperature distribution inside the tool and the specimen during the FAST sintering process. The electrical properties of the sintering composite powder compact, and hence the thermal distribution in the sinter set-up, changed drastically during densification once percolations occurred. Based on the calculated thermal distribution inside the composite powder compact, an optimal tool-powder compact design was determined in order to process electrically conductive ZrO2-TiN composites from electrical insulating powder compacts within minutes with high reproducibility.
URI: 
ISSN: 0955-2219
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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