| 학회 | 한국재료학회 |
| 학술대회 | 2012년 가을 (11/07 ~ 11/09, 라카이샌드파인 리조트) |
| 권호 | 18권 2호 |
| 발표분야 | E. 구조 재료(Structural Materials) |
| 제목 | Rheological Behavior and Suspension Stability of Camphene-based Coal Fly Ash/Alumina Slurries |
| 초록 | Nowadays, the recycling of coal fly ash yielded by combustion in a thermoelectric plant to produce highly valuable materials attracts a great deal of attention from society and industry. Coal fly ash consists of fine silicate particles having SiO2 and Al2O3 as the main components. Therefore, the chemical component of coal fly ash enables the synthesis of mullite(3Al2O3•2SiO2), which is generally used as advanced ceramics. Porous mullite/alumina composites are widely used for industrial and environmental application. These materials could be fabricated by a freeze casting technique using camphene(C10H16)-based coal fly ash/alumina slurry. The colloidal processing of freeze casting slurries is essential and needs the addition of several processing aids such as dispersant for particle deflocculation, and a binder and surfactant for improved green strength and wettability, respectively. In addition, The rheological behavior of freeze casting slurries is sensitive to the state of particle suspension, which is substantially affected by selected solvents and processing additives. Camphene(C10H16) has been shown to have favorable characteristics for use as a sublimable vehicle in the preparation of constructs by freezing of suspensions. In this study, the effects of incorporating multiple processing additives on suspension stability and rheological behavior of camphene-based coal fly ash/alumina slurries, were investigated. |
| 저자 | 최홍준, 이주혁, 윤석영, 박홍채 |
| 소속 | 부산대 |
| 키워드 | Coal fly ash; Camphene; Suspension stability; Mullite/Alumina; Rheology. |
