Effect of Molar Ratio of MgO/Al2O3 on the Performance of MgO-Al2O3-Fe2O3 Composite
作者： Yan Qing Cai , Zhi Fa Wang , Li Xue Yu , Jing Long Bu , Rong Lin Wang
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.284-286.242
关键词: Crystal 、 Materials science 、 Composite number 、 Oxide 、 Spinel 、 Sintering 、 Periclase 、 Thermal shock 、 Magnesium 、 Composite material
摘要: The MgO-Al2O3-Fe2O3 composite was prepared at 1600°C for 3h with magnesia powder and alumina as raw materials ferric oxide additive. effect of the molar ratio MgO/Al2O3 on sintering thermal shock resistance studied. results showed that increasing could improve densification Al2O3-Fe2O3 composites, increased from 3 to 5, composites didn't but decreased. optimum is equal 3, sample MA-3 exhibits better resistance. Its primary crystal phases are spinel periclase, less amount sosoloid 20MgO·19Al2O3·Fe2O3. So, acceptable application in cement rotary kiln linings high temperature gas filter support.
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