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J. Korean Ceram. Soc. > Volume 34(1); 1997 > Article
Journal of the Korean Ceramic Society 1997;34(1): 63.
직접결합 마그네시아-크로미아질 내화벽돌의 특성에 미치는 $Cr_2O_3$ 함유량의 영향
홍기곤, 엄창중1
포항산업과학연구원 환경에너지연구부문 내화재료연구팀
1포철노재(주) 기술연구소 기술개발팀
Effects of $Cr_2O_3$ Content on the Properties of Direct-Bonded Magnesia-Chromia Bricks
The effects of Cr2O3 content on the properties of direct-bonded MgO-Cr2O3 bricks were investigated in the range of 10 to 30 wt% of Cr2O3. Modulus of rupture of bricks was excellent in about 20 wt% of Cr2O3 content. The corrosion resistance of bricks was improved by increasing Cr2O3 content and was directly pro-portional to the amount of secondary spinels. On the other hand, the spalling resistance of bricks depended on the amount of flux rather than Cr2O3 content.
Key words: $MgO-Cr_2O_3$ brick, $Cr_2O_3$ content, Modulus of rupture, Corrosion resistance, Spalling resistance
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