About: Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3

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About: Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3 - Mg(Ca)TiO3 Sandwich Goto Sponge NotDistinct Permalink

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Description	Spark plasma sintering enables very rapid fabrication of bulk ceramic materials. Suitability of this technique for preparing of multilayer ceramic discs is up to now relatively seldom reported.Our work is focused on a bi-layered disc consisting of thick Al2O3 layer and comparably thick Mg(Ca)TiO3 (MCT) layer sintered in one run.Al2O3 powder was nanometric (less than 40 nm) and composed of the hexagonal α-phase whereas MCT is a solid solution of two orthorombic perovskites.Pre-sintered and crushed MCT powder was coarser than alumina, up to 125 μm.The purpose of this material combination was creating of dielectric sandwich consisting of capacitor MCT material and resistor nanoalumina material.Spark plasma sintering run was done at 1200 °C, using pressure 80 MPa and dwell time only 2min.Resulting sandwich was subjected to microstructural observations and cross sectional measurement of microhardness.On the border between Al2O3 and MCT the microhardness was higher than in MCT but has Spark plasma sintering enables very rapid fabrication of bulk ceramic materials. Suitability of this technique for preparing of multilayer ceramic discs is up to now relatively seldom reported.Our work is focused on a bi-layered disc consisting of thick Al2O3 layer and comparably thick Mg(Ca)TiO3 (MCT) layer sintered in one run.Al2O3 powder was nanometric (less than 40 nm) and composed of the hexagonal α-phase whereas MCT is a solid solution of two orthorombic perovskites.Pre-sintered and crushed MCT powder was coarser than alumina, up to 125 μm.The purpose of this material combination was creating of dielectric sandwich consisting of capacitor MCT material and resistor nanoalumina material.Spark plasma sintering run was done at 1200 °C, using pressure 80 MPa and dwell time only 2min.Resulting sandwich was subjected to microstructural observations and cross sectional measurement of microhardness.On the border between Al2O3 and MCT the microhardness was higher than in MCT but has (en)
Title	Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3 - Mg(Ca)TiO3 Sandwich Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3 - Mg(Ca)TiO3 Sandwich (en)
skos:prefLabel	Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3 - Mg(Ca)TiO3 Sandwich Spark Plasma Sintering of Multilayer Ceramics – Case Study of Al2O3 - Mg(Ca)TiO3 Sandwich (en)
skos:notation	RIV/61389021:_____/14:00428489!RIV15-AV0-61389021
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Ctibor, Pavel Kubatík, Tomáš Chráska, Pavel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	46323
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/14:00428489
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Al2O3 - Mg(Ca)TiO3; Sandwich ceramics; Spark Plasma Sintering (en)
http://linked.open.../riv/klicoveSlovo	Al2O3 Spark Plasma Sintering Sandwich ceramics
http://linked.open...ontrolniKodProRIV	[911EEE5B886E]
http://linked.open...v/mistoKonaniAkce	Kutná Hora
http://linked.open...i/riv/mistoVydani	Zurich
http://linked.open...i/riv/nazevZdroje	Key Engineering Materials
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Ctibor, Pavel Chráska, Pavel Kubatík, Tomáš František
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2013-11-06 (xsd:date)
issn	1662-9795
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Trans Tech Publications Ltd

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