The flash sintering behavior of yttria-stabilized zirconia/alumina composites was investigated to understand the role of the fundamental processing and testing parameters (electric field intensity, electric current limit, thermal insulation, homogeneity and dispersion of the two phases) on densification. A strong relation between the composite compositions and the electric parameters needed to promote flash sintering is revealed. Interestingly, the composite preparation method, which affects the two-phases dispersion homogeneity, was shown to have a relevant effect on the flash onset conditions, where the more homogeneous material is more difficult to be flashed. Moreover, the use of a simple thermal insulation system around the green body allowed to improve the final density of the composites under constant electric current.

Flash Sintering of YSZ/Al2O3 Composites: Effect of Processing and Testing Conditions / Biesuz, Mattia; Ometto, Andrea; Sglavo, Vincenzo Maria. - In: MATERIALS. - ISSN 1996-1944. - 14:4(2021), pp. 1031.1-1031.9. [10.3390/ma14041031]

Flash Sintering of YSZ/Al2O3 Composites: Effect of Processing and Testing Conditions

Biesuz, Mattia;Sglavo, Vincenzo Maria
2021

Abstract

The flash sintering behavior of yttria-stabilized zirconia/alumina composites was investigated to understand the role of the fundamental processing and testing parameters (electric field intensity, electric current limit, thermal insulation, homogeneity and dispersion of the two phases) on densification. A strong relation between the composite compositions and the electric parameters needed to promote flash sintering is revealed. Interestingly, the composite preparation method, which affects the two-phases dispersion homogeneity, was shown to have a relevant effect on the flash onset conditions, where the more homogeneous material is more difficult to be flashed. Moreover, the use of a simple thermal insulation system around the green body allowed to improve the final density of the composites under constant electric current.
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Biesuz, Mattia; Ometto, Andrea; Sglavo, Vincenzo Maria
Flash Sintering of YSZ/Al2O3 Composites: Effect of Processing and Testing Conditions / Biesuz, Mattia; Ometto, Andrea; Sglavo, Vincenzo Maria. - In: MATERIALS. - ISSN 1996-1944. - 14:4(2021), pp. 1031.1-1031.9. [10.3390/ma14041031]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/294184
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