Low temperature sintering and microwave dielectric properties of B 2O3-added LiAlSiO4 ceramics

Sang Hyo Kweon, Mi Ri Joung, Jin Seong Kim, Bo Yun Kim, Sahn Nahm, Jong Hoo Paik, Young Sik Kim, Tae Hyun Sung

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40 Citations (Scopus)


The sintering temperature of the LiAlSiO4(LAS) ceramics, which exhibited the microwave dielectric properties of εr = 4.8, Q × f = 36 000GHz, and Tf=8.0 ppm/°C, decreased below 960°C when B2O3 was added. The B2O 3-related liquid phase was formed and assisted the densification of the LAS ceramics at low temperatures. The average grain size of the specimen sintered at 950°C increased with the addition of B2O3 but decreased when B2O3 exceeded 12.0 mol%, probably due to the presence of a large amount of liquid phase. The LAS ceramics containing 12.0 mol% of B2O3 sintered at 950°C exhibited the excellent microwave dielectric properties of εr = 5.3, Q×f = 212 000GHz and Tf =-7.7 ppm/°C.

Original languageEnglish
Pages (from-to)1995-1998
Number of pages4
JournalJournal of the American Ceramic Society
Issue number7
Publication statusPublished - 2011 Jul

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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