Microstructural observations of Cu2O-added BaTiO3 sintered under N2 flow

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

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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 languageEnglish
Pages (from-to)622-626
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume110
Issue number1283
DOIs
Publication statusPublished - 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

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