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

Research output: Contribution to journalArticle

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Abstract

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
Volume94
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

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dielectric property
ceramics
Dielectric properties
Sintering
Microwaves
Liquids
Densification
liquid
Temperature
grain size
boron oxide
microwave
sintering
temperature

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Low temperature sintering and microwave dielectric properties of B 2O3-added LiAlSiO4 ceramics. / Kweon, Sang Hyo; Joung, Mi Ri; Kim, Jin Seong; Kim, Bo Yun; Nahm, Sahn; Paik, Jong Hoo; Kim, Young Sik; Sung, Tae Hyun.

In: Journal of the American Ceramic Society, Vol. 94, No. 7, 01.07.2011, p. 1995-1998.

Research output: Contribution to journalArticle

Kweon, Sang Hyo ; Joung, Mi Ri ; Kim, Jin Seong ; Kim, Bo Yun ; Nahm, Sahn ; Paik, Jong Hoo ; Kim, Young Sik ; Sung, Tae Hyun. / Low temperature sintering and microwave dielectric properties of B 2O3-added LiAlSiO4 ceramics. In: Journal of the American Ceramic Society. 2011 ; Vol. 94, No. 7. pp. 1995-1998.
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