| FAHM(Fly-Ash Hollow Microsphere)첨가에 의한 도자기의 소성특성과 경량화 |
| 김근희, 피재환, 김종영, 조우석, 김경자 |
| 한국세라믹기술원 도자세라믹센터 |
| Lightweight Characteristics and Sintering behavior of Porcelain by Addition FAHM(Fly-Ash Hollow Microsphere) |
| Geun-Hee Kim, Jae-Hwan Pee, Jong-Young Kim, Woo-Seok Cho, Kyeong-Ja Kim |
| Whiteware Ceramric Center, KICET |
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| ABSTRACT |
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Sintering behavior and lightweight characteristics of porcelain by addition of FAHM (Fly-Ash Hollow Microsphere) were evaluated. Green body of Backja composition (general porcelain) in which FAHM was added(15 and 20 wt%) was made by slip casting method. The green body was sintered at 1270 and $1290^{circ}C$ and maintained for 1h. The bulk density and linear shrinkage of the sintered body with FAHM (20 wt%) decreased. As the contents of FAHM. increased, mullite and cristobalite phases increased. In the microstructure, FAHM shells remained after sintering, and the generation of mullite fibers around FAHM shells also were confirmed. the weight of porcelain with of 20% FAHM decreased by 40% and residual FAHM shells promoted the mullite of generation in the matrix. |
| Key words:
Fly-ash, Ligthweight, Porous, Crystalline phase, Mullite |
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