Role of lithium borosilicate glass in the decomposition of MgTiO3-based dielectric ceramic during sintering

  • Hee Kyun Shin
  • , Hyunho Shin
  • , Hyun Suk Jung
  • , Seo Yong Cho
  • , Jeong Ryeol Kim
  • , Kug Sun Hong

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The decomposition behaviour of 0.9MgTiO3-0.1CaTiO3 dielectric ceramic during a liquid phase sintering by lithium borosilicate (LBS) glass was studied. The decompositions of MgTiO3 into MgTi2O5 and Mg2TiO4 were apparent during the sintering although the reactions are thermodynamically unfavourable in glass-free compositions. The role of the LBS glass in favouring the decomposition reaction was investigated in terms of the thermodynamic activity of the reaction product in the glass. The decomposition reactions were not necessarily harmful because of the high dielectric performance of the decomposition products, MgTi2O5 (17.4 permittivity; 47,000 GHz quality factor) and Mg2TiO4 (14.4 and 55,000 GHz, respectively).

Original languageEnglish
Pages (from-to)1206-1214
Number of pages9
JournalMaterials Research Bulletin
Volume41
Issue number6
DOIs
StatePublished - 15 Jun 2006
Externally publishedYes

Keywords

  • A. Ceramics
  • D. Dielectric properties

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