Effects of $Cr_2O_3$ Content on the Properties of Direct-Bonded Magnesia-Chromia Bricks

직접결합 마그네시아-크로미아질 내화벽돌의 특성에 미치는 $Cr_2O_3$ 함유량의 영향

  • 홍기곤 (포항산업과학연구원 환경에너지연구부문 내화재료연구팀) ;
  • 엄창중 (포철노재(주) 기술연구소 기술개발팀)
  • Published : 1997.01.01


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.


$MgO-Cr_2O_3$ brick;$Cr_2O_3$ content;Modulus of rupture;Corrosion resistance;Spalling resistance


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