| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Dependence of dielectric properties of 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 doped with Dy2O3 on preparation method of PVA binder solution |
| 초록 |
Effects of the solvent composition of PVA binder on dielectric properties of 0.98BaTiO3-0.02(Ba0.5Ca0.5)SiO3 ceramics doped with x wt% Dy2O3 (0.0≤x≤0.3) were investigated. The specimens sintered at 1260℃ and/or 1320℃ for 1h showed, a single phase of a perovskite structure through the entire range of compositions. The sintered specimens showed the high relative densities above 90% and uniform grain morphologies were observed. Dieletric properties were affected by crystal structural characteristics and microstructural characteristics, which were confirmed by the X-ray Rietveld refinement analysis and SEM, respectively. Microstructural characteristics of the sintered specimens were dependent on the relative solvent ratio of ethyl alcohol to water of 10wt% PVA solution. Maximum dielectric constant (εr = 2723.3) at 1kHz was obtained for the sintered specimens with 0.1wt% Dy2O3 and prepared by the solvent composition (ethyl alcohol/water = 40/60 v/o) of 10wt% PVA solution. Moreover, the dependence of IR (insulation resistance) and dissipation factor on microstructural homogeneity were also discussed. |
| 저자 |
Nak Beom Jo1, Jin Seok Baek2, Eung Soo Kim3
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| 소속 |
1Department of Materials Engineering, 2Kyonggi Univ., 3Suwon 16227 |
| 키워드 |
BaTiO<SUB>3</SUB>-based ceramics; Binder; Structural characteristics; Microstructure; Dielectric properties
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| E-Mail |
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