| 테이프 케스팅 거동에 미치는 알루미나의 입도분포의 영향 |
| 윤원균, 김정주, 조상희 |
| 경북대학교 무기재료공학과 |
| Effects of Particle Size Distribution of Alumina on Behaviors of Tape Casting |
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| ABSTRACT |
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Effects of particle size distribution of alumina ceramics on behaviors of tape casting were investigated with emphases on the rheological characteristic of slurry, green density, green sheet strength, and sintering density. For the control of particle size distribution of alumina, the commercial grade low soda alumina, which had different mean particle size of 3.58 ${mu}{textrm}{m}$ and 0.42 ${mu}{textrm}{m}$, were chosen and blended together. As results, the mixing of 80 wt% fine powder and 20 wt% coarse powder(designated to FC20) led to the increase of packing density and strength of green sheet, and made it easy to handle during processing without lowering of sintering density. Besides, the pseudoplastic behavior of slurry decreased with increase of the fraction of coarse alumina powder. |
| Key words:
Particle size distribution, Alumina ceramics, Tape casting, Pseudoplastic behavior |
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