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J. Korean Ceram. Soc. > Volume 41(9); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(9): 657.
doi: https://doi.org/10.4191/kcers.2004.41.9.657
MgO-Carbon 내화물의 산화반응기구와 TiC첨가에 의한 산화방지 효과
천승호, 공현식, 전병세
경남대학교 신소재공학부
Kinetics of Oxidation, and Effects of TiC on Oxidation Resistance in MgO-Carbon Refractory
Sungho Cheon, Hyunsik Kong, Byungsei Jun
ABSTRACT
The kinetics of oxidation and disappearance of graphite in MgO-C refractories containing TiC were, in the temperature range from 1000 to 1200$^{circ}C$, investigated to enhance the oxdation resistance of MgO-C refractproes. The air was blown into the furnace at flow rate of 0.2 litters per minute, and then weight decrease was measured with a thermo balance at 30 seconds intervals until the value of weight became unchanged. The value of effective diffusion coefficient (De) for the specimen of MgO-C was 1.39${times}$10$^$-4/ ㎡/sec. The diffusion of oxygen through decarburized layer was the rate deforming step in the overall oxidation process under present experimental conditions. The TiC additions enhanced the oxidation resistance of the MgO-C refractories.
Key words: Kinetics, Oxidation, TiC, Oxidation resistance, MgO-C
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