Zirconia mullite brick is a special refractory material made of industrial alumina and zirconia concentrate as raw materials, and zirconia is introduced into the mullite matrix through reaction sintering process. The introduction of zirconium oxide into mullite bricks can substantially improve the high-temperature mechanical properties of mullite materials by utilizing the phase transition toughening of zirconium oxide.
Zirconia mullite brick is a special refractory material made of industrial alumina and zirconia concentrate as raw materials, and zirconia is introduced into the mullite matrix through reaction sintering process. The introduction of zirconium oxide into mullite bricks can substantially improve the high-temperature mechanical properties of mullite materials by utilizing the phase transition toughening of zirconium oxide.
Items | Physical and Chemical Indexs | ||
Z6 | Z25 | Z-30 | |
Zirconia-Mullite brick | Zirconia-Corundum brick | ||
ZrO2% | ≥6 | ≥25 | ≥30 |
AL2O3% | ≥55 | ≥45 | ≥45 |
Fe2O3(%) | ≤0.5 | ≤0.3 | |
Apparent Porosity (%) | ≤18 | ≤17 | ≤18 |
Bulk Density (g/cm3) ≥ | ≥2.9 | ≥3.0 | ≥3.2 |
Cold Crushing Srength MPA≥ | ≥80 | ≥100 | ≥100 |
Refractoriness under load,℃ 0.2MPa,KD,℃ | ≥1650℃ | ≥1700℃ | ≥1700℃ |
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