Publication detail

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

SIDDIQUI, M. VALÁŠEK, D. BAI, Y. SALAMON, D.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Cold sintering process; Phase transition; Annealing; Electroceramic; Doping; Low temperature densification

Authors

SIDDIQUI, M.; VALÁŠEK, D.; BAI, Y.; SALAMON, D.

Released

1. 9. 2023

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

2666-5395

Periodical

Open Ceramics

Year of study

15

Number

1

State

Kingdom of the Netherlands

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S2666539523000731?via%3Dihub

BibTex

@article{BUT187397,
  author="Maliha {Siddiqui} and Daniel {Valášek} and Yang {Bai} and David {Salamon}",
  title="Phase transformation of cold-sintered doped barium titanate ceramics during the post-annealing process",
  journal="Open Ceramics",
  year="2023",
  volume="15",
  number="1",
  pages="7",
  doi="10.1016/j.oceram.2023.100401",
  issn="2666-5395",
  url="https://www.sciencedirect.com/science/article/pii/S2666539523000731?via%3Dihub"
}