| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Microwave Dielectric Properties of β -Wollastonite Glass-Ceramics for LTCC process |
| 초록 |
For 5G telecommunication systems and devices, the dielectric materials with low dielectric constant, high quality factor(Qf) as well as low sintering temperature for LTCC process are required. α- and β-wollastonite are one of good candidate to meet these requirements if these materials could be applicable to LTCC process. Preparation of β-wollastonite by solid state reaction is difficult to have high density because of its narrow sintering windows and high porosity. It was reported β-wollastonite with Al2O3 additives shows dense structure, however the sintering temperature is too high for LTCC process. The α-wollastonite is high temperature phase of wollastonite and high sintering temperature of 1490℃ is required for high density. In this study, β-wollastonite glass-ceramics specimens were 2 step sintered at 730℃ for 3h and crystallized at 900℃ for 3h and β-wollastonite single phase was confirmed. β-Wollastonite glass- ceramics showed high Qf value close to the α-wollastonite, which requires high sintering temperature. Because of high crystallinity derived from 2-step sintering, β-wollastonite glass-ceramics could have high dielctric properties and be applicable to LTCC materials. |
| 저자 |
Jin Seok Baek1, Eung Soo Kim2
|
| 소속 |
1Department of Materials Engineering, 2Kyonggi Univ. |
| 키워드 |
<P>Wollastonite</P> |
| E-Mail |
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