About: Densification of fine-grained alumina ceramics doped by magnesia, yttriaand zirconia evaluated by two different sintering models

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The influence of various dopants (500 ppm MgO and Y2O3;250 ppm ZrO2) on sintering of fine-grained alumina ceramics was evaluated by high-temperature dilatometry. The apparent activation energy of sintering was estimated with the help of Master Sintering Curve and a model proposedby Wang and Raj. The densification kinetics was controlled by at least two mechanisms operating at low (higher activation energy) and high (loweractivation energy) densities. Good agreement between the activation energies calculated with both models was observed for low as well as forhigh densities. The lowest value of activation energy exhibited undoped alumina; the addition of MgO resulted in slight increase of the activationenergy. Y2O3and ZrO2significantly inhibited the densification, which was reflected in the higher sintering activation energies. The low activationenergies in the final sintering step indicates the importance of proper choice of sintering temperature, namely in the two-step sintering process. The influence of various dopants (500 ppm MgO and Y2O3;250 ppm ZrO2) on sintering of fine-grained alumina ceramics was evaluated by high-temperature dilatometry. The apparent activation energy of sintering was estimated with the help of Master Sintering Curve and a model proposedby Wang and Raj. The densification kinetics was controlled by at least two mechanisms operating at low (higher activation energy) and high (loweractivation energy) densities. Good agreement between the activation energies calculated with both models was observed for low as well as forhigh densities. The lowest value of activation energy exhibited undoped alumina; the addition of MgO resulted in slight increase of the activationenergy. Y2O3and ZrO2significantly inhibited the densification, which was reflected in the higher sintering activation energies. The low activationenergies in the final sintering step indicates the importance of proper choice of sintering temperature, namely in the two-step sintering process. (en)
Title	Densification of fine-grained alumina ceramics doped by magnesia, yttriaand zirconia evaluated by two different sintering models Densification of fine-grained alumina ceramics doped by magnesia, yttriaand zirconia evaluated by two different sintering models (en)
skos:prefLabel	Densification of fine-grained alumina ceramics doped by magnesia, yttriaand zirconia evaluated by two different sintering models Densification of fine-grained alumina ceramics doped by magnesia, yttriaand zirconia evaluated by two different sintering models (en)
skos:notation	RIV/00216305:26620/14:PU110690!RIV15-MSM-26620___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(EE2.3.30.0005)
http://linked.open...iv/cisloPeriodika	16
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Maca, Karel Pouchlý, Václav Bodišová, Katarina
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	10227
http://linked.open...ai/riv/idVysledku	RIV/00216305:26620/14:PU110690
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sintering, Alumina, Activation energy (en)
http://linked.open.../riv/klicoveSlovo	Activation energy Alumina Sintering
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[09FEFA55FFE4]
http://linked.open...i/riv/nazevZdroje	Journal of the European Ceramic Society
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology Support of Interdisciplinary Excellence Research Teams Establishment at BUT
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Maca, Karel Pouchlý, Václav Galusek, Dušan Bodišová, Katarina Švancárek, Peter
issn	0955-2219
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	26620

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