Synthesis and pressure-assisted sintering of cacu<inf>3</inf>ti<inf>4</inf>o<inf>12</inf> dielectrics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00548822" target="_blank" >RIV/61389021:_____/21:00548822 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2571-6131/4/3/33" target="_blank" >https://www.mdpi.com/2571-6131/4/3/33</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ceramics4030033" target="_blank" >10.3390/ceramics4030033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and pressure-assisted sintering of cacu<inf>3</inf>ti<inf>4</inf>o<inf>12</inf> dielectrics

Popis výsledku v původním jazyce

In this paper, we examined the dielectric properties of CaCu3Ti4O12 (CCTO) ceramics fabricated by various routes and discussed the most important conditions affecting their dielectric behavior. We prepared feedstock powder using a molten salt route and compared it with a commercial powder. Both powders were sintered using SPS. For some samples, annealing was applied after sintering. Other samples were obtained by high-pressure forming and conventional sintering, using both powders. Phase composition, porosity and microhardness were evaluated in comparison with the literature. The results showed that a sintering temperature just below or equal to 1000◦C should be set for the SPS process. However, the best dielectric characteristics were obtained in samples prepared by high-pressure forming and conventional sintering, which showed a relative permittivity of 22,000 and a loss tangent of 0.13 at 1 MHz.

Název v anglickém jazyce

Synthesis and pressure-assisted sintering of cacu<inf>3</inf>ti<inf>4</inf>o<inf>12</inf> dielectrics

Popis výsledku anglicky

In this paper, we examined the dielectric properties of CaCu3Ti4O12 (CCTO) ceramics fabricated by various routes and discussed the most important conditions affecting their dielectric behavior. We prepared feedstock powder using a molten salt route and compared it with a commercial powder. Both powders were sintered using SPS. For some samples, annealing was applied after sintering. Other samples were obtained by high-pressure forming and conventional sintering, using both powders. Phase composition, porosity and microhardness were evaluated in comparison with the literature. The results showed that a sintering temperature just below or equal to 1000◦C should be set for the SPS process. However, the best dielectric characteristics were obtained in samples prepared by high-pressure forming and conventional sintering, which showed a relative permittivity of 22,000 and a loss tangent of 0.13 at 1 MHz.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Ceramics

ISSN

2571-6131

e-ISSN

2571-6131

Svazek periodika

4

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

447-466

Kód UT WoS článku

000700659600001

EID výsledku v databázi Scopus

2-s2.0-85117683361