| 학회 |
한국재료학회 |
| 학술대회 |
2012년 가을 (11/07 ~ 11/09, 라카이샌드파인 리조트) |
| 권호 |
18권 2호 |
| 발표분야 |
E. 구조 재료(Structural Materials) |
| 제목 |
Effect of ceramic fillers on sintering and crystallization behavior of glass-ceramic filler composite |
| 초록 |
Cordierite and willemite have been added as filler in the glass to control various properties such as coefficient of thermal expansion and mechanical strength of the composites. The sintering and crystallization behavior of the glass-ceramic filler composites should be fully understood to acquire the advanced performance. Bi2O3-ZnO-B2O3 glass frit was mixed with 5~20 vol% of cordierite and willemite, respectively. Chemical reactivity and viscous behavior during firing of the glass-ceramic filler composites were evaluated with differential thermal analyzer and hot stage microscopy. The crystallization behavior was investigated by observing microstructure with scanning electron microscope and X-diffraction analysis after heat treatment. The particle size and content of the filler were highly related with the viscous behavior of the composite. With decreasing size of the filler, the viscosity of the composite was increased due to high specific surface area and surface energy of the filler. The viscosity increased dramatically when the content of the filler is higher than 15vol% and the result may be explained that the filler in the composite obstructs the fluidity of the glass. The delay of the crystallization was observed in the glass-cordierite composite and it may indicate that cordierite absorb more heat energy than willemite (Heat capacity of fillers, cordierite: 0.9J/g℃, willemite:0.55J/g℃). The purpose of this study is to understand the crystallization and sintering behavior of the glass-ceramic filler composite and the result can contribute to fabricate the composite with the advanced performance. |
| 저자 |
Jiyoung Seo1, Sunil Kim2, Sunghwan Cho1, Jungki Lee2, Sneha samal1, Hyungsun Kim2
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| 소속 |
1School of Material Engineering, 2Inha Univ. |
| 키워드 |
Glass frit; Filler; Crystallization; Sintering behavior
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| E-Mail |
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