Transmission electron microscopy microstructure of 0.95(Na 0.5K0.5)NbO3-0.05BaTiO3 ceramics

Hwack Joo Lee, Hyun Ryu, Moon Sub Bae, Yang Koo Cho, Sahn Nahm

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Microstructural characterizations using transmission electron microscopy on 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 ceramics sintered at 1030°-1150°C for 2 h were carried out. The liquid phase was found at the triple junction of the grains in all specimens and abnormal grain growth occurred in the presence of the liquid phase. Abnormally grown grains whose shapes were cuboidal were well developed. Anisotropically faceted amorphous liquid phase pockets were observed inside the grain in a specimen sintered at 1060°C for 2 h. The interface between the grain and the liquid matrix was flat and some were identified to be {100} planes of the grains. A certain amount of liquid at the sintering temperature of 1060°C enhanced the abnormal grain growth and contributed to the improvement of the piezoelectric properties.

Original languageEnglish
Pages (from-to)3529-3532
Number of pages4
JournalJournal of the American Ceramic Society
Volume89
Issue number11
DOIs
Publication statusPublished - 2006 Nov 1

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ceramics
transmission electron microscopy
microstructure
Transmission electron microscopy
Microstructure
liquid
Liquids
Grain growth
triple junction
Sintering
matrix
temperature
Temperature

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Transmission electron microscopy microstructure of 0.95(Na 0.5K0.5)NbO3-0.05BaTiO3 ceramics. / Lee, Hwack Joo; Ryu, Hyun; Bae, Moon Sub; Cho, Yang Koo; Nahm, Sahn.

In: Journal of the American Ceramic Society, Vol. 89, No. 11, 01.11.2006, p. 3529-3532.

Research output: Contribution to journalArticle

Lee, Hwack Joo ; Ryu, Hyun ; Bae, Moon Sub ; Cho, Yang Koo ; Nahm, Sahn. / Transmission electron microscopy microstructure of 0.95(Na 0.5K0.5)NbO3-0.05BaTiO3 ceramics. In: Journal of the American Ceramic Society. 2006 ; Vol. 89, No. 11. pp. 3529-3532.
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