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Journal of the Korean Ceramic Society 1985;22(5): 71. |
| $ZrSiO_4$ 소결체의 특성에 미치는 첨가제의 영향에 관한 연구 |
| 박금철, 차명진1 |
한양대학교
1조선능화공업(주) |
| The Effect of Additives on Properties of Sintered $ZrSiO_4$ |
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| ABSTRACT |
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This study deals with sintering and corrosive behavior of sintered zircons mixed with 5wt% of clay $Cr_2O_3$ $CrO_3-MgO$ aqueous solution and $CrO_3-Mg(OH)_2$ aqueous solution. Measurements were conducted by firing specimens at 135$0^{circ}C$ 145$0^{circ}C$ and 155$0^{circ}C$ 1$650^{circ}C$ for 3hrs in oxidized and reduced atmospheric conditions. Following results were obtained. 1. Sintered zircon with 5 wt% clay showed that highest compressive strength and the lowest apparent porosity and the other showed less positive result than above specimen in order of zircon with $CrO_3-MgO$ aqueous solution $CrO_3-Mg(OH)_2$ aqueous solution and $Cr_2O_3$. 2. The more firing temperature increased the more its strength improved and porosity decreased and specimen which was fired over 155$0^{circ}C$ and in reduced atmospheric condition showed better results. 3. Zircon with additives which was fired over 155$0^{circ}C$ showed the evidence of thermal dissociation but it was not rebonded completely during cooling. 4. Zircon with $CrO_3-MgO$ aqueous solution and $CrO_3-Mg(OH)_2$ aqueous solutiion showed more corrosive resistance than zircon itself and zircon-clay system. |
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