Phase transformation of cold-sintered doped barium titanate ceramics during the post-annealing process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU150395" target="_blank" >RIV/00216305:26620/23:PU150395 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666539523000731?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666539523000731?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.oceram.2023.100401" target="_blank" >10.1016/j.oceram.2023.100401</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase transformation of cold-sintered doped barium titanate ceramics during the post-annealing process

Popis výsledku v původním jazyce

The cold sintering technique has been developed to densify electroceramics at significantly low temperatures to tackle high energy consumption as well as compatibility of electroceramic components in modern electronics. However, obstacles still exist since, to obtain desired electrical properties, a post-annealing procedure at elevated temperatures must follow to trigger compulsory phase formation and/or grain growth. This work investigates the BaTiO3 and (Ba,Sr)TiO3 ceramics via both the cold and conventional sintering routes, and then compares their phase transformation behaviors during the post-annealing process. Results suggest that, given similar particle and grain sizes, the cold-sintered ceramics tend to retain a substantial part of the pristine tetragonal phase at annealing temperatures of <800 C-degrees, while the cubic phase tends to dominate when annealed at >800 C-degrees. This indicates a process-stimulated phase transformation that may guide or limit the selection of annealing temper-ature in practice.

Název v anglickém jazyce

Phase transformation of cold-sintered doped barium titanate ceramics during the post-annealing process

Popis výsledku anglicky

The cold sintering technique has been developed to densify electroceramics at significantly low temperatures to tackle high energy consumption as well as compatibility of electroceramic components in modern electronics. However, obstacles still exist since, to obtain desired electrical properties, a post-annealing procedure at elevated temperatures must follow to trigger compulsory phase formation and/or grain growth. This work investigates the BaTiO3 and (Ba,Sr)TiO3 ceramics via both the cold and conventional sintering routes, and then compares their phase transformation behaviors during the post-annealing process. Results suggest that, given similar particle and grain sizes, the cold-sintered ceramics tend to retain a substantial part of the pristine tetragonal phase at annealing temperatures of <800 C-degrees, while the cubic phase tends to dominate when annealed at >800 C-degrees. This indicates a process-stimulated phase transformation that may guide or limit the selection of annealing temper-ature in practice.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Open Ceramics

ISSN

2666-5395

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

„“-„“

Kód UT WoS článku

001103130600001

EID výsledku v databázi Scopus

2-s2.0-85163555154