| 유리연마슬러지를 사용한 다공성 소재의 미세구조 및 물리적 특성에 관한 연구 |
| 추용식, 권춘우, 이종규, 심광보1 |
요업기술원 세라믹.건재본부
1한양대학교 세라믹공학과 |
| Microstructure and Physical Properties of Porous Material Fabricated from a Glass Abrasive Sludge |
| Yong-Sik Chu, Choon-Woo Kwon, Jong-Kyu Lee, Kwang-Bo Shim1 |
Ceramics and Building Materials Division, Korea Institute of Ceramic Engineering and Technology
1Department of Ceramic Engineering, Hanyang University |
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| ABSTRACT |
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A porous material with a surface layer was fabricated from glass abrasive sludge and expanding agents. The glass abrasive sludges were mixed with expanding agents and compacted into precursors. These precursors were sintered in the range of $700-900^{circ}C$ for 20 min. The sintered porous materials had a surface layer with smaller pores and inner parts with larger pores. The surface layer and closed pores controlled water absorption. As the expanding agent fraction and the sintering temperature increased, the porosity and pore size increased. The porous materials with $Fe_2O_3$ and graphite as the expanding agents had a low absorption ratio of about 3% or lower while the porous material with $CaCO_3$ as the expanding agent had a higher absorption ratio and more open pores. |
| Key words:
Glass abrasive sludge, Expanding agents, Glass layer, Pore |
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