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

doi:10.1111/j.1551-2916.2011.04619.x

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 journal › Article › peer-review

45 Citations (Scopus)

Abstract

The sintering temperature of the LiAlSiO₄(LAS) ceramics, which exhibited the microwave dielectric properties of ε_r = 4.8, Q × f = 36 000GHz, and T_f=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 ε_r = 5.3, Q×f = 212 000GHz and T_f =-7.7 ppm/°C.

Original language	English
Pages (from-to)	1995-1998
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	94
Issue number	7
DOIs	https://doi.org/10.1111/j.1551-2916.2011.04619.x
Publication status	Published - 2011 Jul

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1551-2916.2011.04619.x

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title = "Low temperature sintering and microwave dielectric properties of B 2O3-added LiAlSiO4 ceramics",

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.",

author = "Kweon, {Sang Hyo} and Joung, {Mi Ri} and Kim, {Jin Seong} and Kim, {Bo Yun} and Sahn Nahm and Paik, {Jong Hoo} and Kim, {Young Sik} and Sung, {Tae Hyun}",

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T1 - Low temperature sintering and microwave dielectric properties of B 2O3-added LiAlSiO4 ceramics

AU - Kweon, Sang Hyo

AU - Joung, Mi Ri

AU - Kim, Jin Seong

AU - Kim, Bo Yun

AU - Nahm, Sahn

AU - Paik, Jong Hoo

AU - Kim, Young Sik

AU - Sung, Tae Hyun

PY - 2011/7

Y1 - 2011/7

N2 - 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.

AB - 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.

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

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