Microstructural observations of Cu2O-added BaTiO3 sintered under N2 flow

Chang Yeoul Kim; Tohru Sekino; Tomohiko Adachi; Yo Yamamoto; Koichi Niihara

doi:10.2109/jcersj.110.622

Microstructural observations of Cu₂O-added BaTiO₃ sintered under N₂ flow

Chang Yeoul Kim, Tohru Sekino, Tomohiko Adachi, Yo Yamamoto, Koichi Niihara

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

BaTiO₃-Cu ferroelectric/metal composite was successfully fabricated by sintering a Cu₂O-added BaTiO₃ pellet using a 100 ml/min nitrogen gas flow rate. Abnormal grain growth was found to occur above 1280°C by scanning electron microscopy (SEM). Electron probe micro-analysis (EPMA) results indicated that crystalline spheres within abnormally grown grains were generated from excess titanium-contained BaTiO₃ and copper melt. Transmission electron microscopy (TEM) revealed that copper metal had twins and that BaTiO₃ had faceted boundaries.

Original language	English
Pages (from-to)	622-626
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	110
Issue number	1283
DOIs	https://doi.org/10.2109/jcersj.110.622
Publication status	Published - 2002 Jul

Keywords

Abnormal grain growth
Barium titanate
Copper dispersion
Crystalline sphere
Grain boundary re-entrant edges
Liquid phase sintering
Microstructure
Reductive atmosphere

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.2109/jcersj.110.622

Cite this

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title = "Microstructural observations of Cu2O-added BaTiO3 sintered under N2 flow",

abstract = "BaTiO3-Cu ferroelectric/metal composite was successfully fabricated by sintering a Cu2O-added BaTiO3 pellet using a 100 ml/min nitrogen gas flow rate. Abnormal grain growth was found to occur above 1280°C by scanning electron microscopy (SEM). Electron probe micro-analysis (EPMA) results indicated that crystalline spheres within abnormally grown grains were generated from excess titanium-contained BaTiO3 and copper melt. Transmission electron microscopy (TEM) revealed that copper metal had twins and that BaTiO3 had faceted boundaries.",

keywords = "Abnormal grain growth, Barium titanate, Copper dispersion, Crystalline sphere, Grain boundary re-entrant edges, Liquid phase sintering, Microstructure, Reductive atmosphere",

author = "Kim, {Chang Yeoul} and Tohru Sekino and Tomohiko Adachi and Yo Yamamoto and Koichi Niihara",

year = "2002",

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AU - Kim, Chang Yeoul

AU - Sekino, Tohru

AU - Adachi, Tomohiko

AU - Yamamoto, Yo

AU - Niihara, Koichi

PY - 2002/7

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AB - BaTiO3-Cu ferroelectric/metal composite was successfully fabricated by sintering a Cu2O-added BaTiO3 pellet using a 100 ml/min nitrogen gas flow rate. Abnormal grain growth was found to occur above 1280°C by scanning electron microscopy (SEM). Electron probe micro-analysis (EPMA) results indicated that crystalline spheres within abnormally grown grains were generated from excess titanium-contained BaTiO3 and copper melt. Transmission electron microscopy (TEM) revealed that copper metal had twins and that BaTiO3 had faceted boundaries.

KW - Abnormal grain growth

KW - Barium titanate

KW - Copper dispersion

KW - Crystalline sphere

KW - Grain boundary re-entrant edges

KW - Liquid phase sintering

KW - Microstructure

KW - Reductive atmosphere

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