| 산화물 및 비산화물 Microfiller의 첨가가 저시멘트 알루미나 캐스타블의 특성에 미치는 영향 |
| 이승재, 이상원1 |
원전연료(주) 기술연구소
1포항제철 기술연구소 |
| Influence of Various Oxide and Nonoxide Microfillers on the Thermomechanical Properties of Alumina Based Low-Cement-Castables |
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| ABSTRACT |
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Several oxide (ZrO2, Al2TiO5, reactive Al2O3) and nonoxide (SiC, Si3N4, "ALON" (5AlN.9Al2O3)) additives were used as a microfiller for alumina based LCC (Low-Cement-Castable). High temperature prooperties (HMOR, softening under load) and the phase changes of developed LCC on various sintering temperatures were examined. In addition, thermal shock test and corrosion test were accomplished. Based on these data the effects of each microfiller on the properties of LCC were established comparing to those of the commercial LCC with amorphous silica as a microfiller. The castables, containing reactive alumina, ZrO2 and "ALON" (5AlN.9Al2O3) as a first portion, exhibited considerably higher HMOR-values over 100$0^{circ}C$, better creep behavior, and thermal shock resistance than those of castables with amorphous silica. The LCC with 5% Al2TiO5 showed no corrosion against molten aluminum.nst molten aluminum. |
| Key words:
Low cement castable, Alumina, Microfiller, Thermomechanical properties |
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