Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU118868" target="_blank" >RIV/00216305:26620/16:PU118868 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ceramint.2016.03.088" target="_blank" >http://dx.doi.org/10.1016/j.ceramint.2016.03.088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2016.03.088" target="_blank" >10.1016/j.ceramint.2016.03.088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics

Popis výsledku v původním jazyce

The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in aplanetary ball mill. Green bodies were formed by an isostatic pressure of 300MPa. The sintering of these samples was done either by theTwo-Step Sintering (TSS) approach or by conventional pressure less sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 °C for 30 min and the next step was performed at 1200 °C for 20h. The density oftheobtainedsamplesafterthetwo-stepsinteringreachedalmost90%ofthetheoretical density (%TD).Thesecondsetofcompactswassinteredat1400 °C for30mininair.Thesampleswithout open porositywerepost-sinteredbytheHIPat1200 °C for2hinanargonatmosphereatapressureof 200MPa.Thedensitysignificantly increasedupto96%TD.Thedifferencesbetweensamplespreparedby these twotechniqueswerealsoanalyzedbyXRDandSEM.Thelatticevibrationspectrawereobtained using Ramanspectroscopyandtheyindicateahighdegreeoflatticedisorder,aswellashighvaluesof the oxygenvacancyconcentration.Electricalcharacteristicwereestablishedinthefrequencyrangefrom 10kHzto10GHz.Thechoiceoftheprocessingroutehadconsiderableinfluence onstructuraland physicalpropertiesofMgTiO3 ceramics.

Název v anglickém jazyce

Effect of consolidation parameters on structural, microstructural and electrical properties of magnesium titanate ceramics

Popis výsledku anglicky

The aim of this study is to explore the influence of the processing route on the structural and physical properties of bulk MgTiO3 ceramics. Commercially available MgO and TiO2 powders were mechanically activated in aplanetary ball mill. Green bodies were formed by an isostatic pressure of 300MPa. The sintering of these samples was done either by theTwo-Step Sintering (TSS) approach or by conventional pressure less sintering followed by Hot Isostatic Pressing (post-HIPing). The first set of compacts was sintered by TSS in air at 1300 °C for 30 min and the next step was performed at 1200 °C for 20h. The density oftheobtainedsamplesafterthetwo-stepsinteringreachedalmost90%ofthetheoretical density (%TD).Thesecondsetofcompactswassinteredat1400 °C for30mininair.Thesampleswithout open porositywerepost-sinteredbytheHIPat1200 °C for2hinanargonatmosphereatapressureof 200MPa.Thedensitysignificantly increasedupto96%TD.Thedifferencesbetweensamplespreparedby these twotechniqueswerealsoanalyzedbyXRDandSEM.Thelatticevibrationspectrawereobtained using Ramanspectroscopyandtheyindicateahighdegreeoflatticedisorder,aswellashighvaluesof the oxygenvacancyconcentration.Electricalcharacteristicwereestablishedinthefrequencyrangefrom 10kHzto10GHz.Thechoiceoftheprocessingroutehadconsiderableinfluence onstructuraland physicalpropertiesofMgTiO3 ceramics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

42

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

9887-9898

Kód UT WoS článku

000374811600074

EID výsledku v databázi Scopus

2-s2.0-84977955873