摘要
研究了β-SiAlON-刚玉、β-SiAlON-SiC和β-SiAlON-刚玉-SiC三种复相耐火材料的主要高温使用性能,以及其中SiAlON相含量(w,下同)分别为25%、40%和55%时对其性能产生的影响。结果表明:β-SiAlON-SiC复相耐材的抗热震性、抗渣侵蚀性优于β-SiAlON-刚玉,在热震温差为1100℃时,抗热震次数达到40次以上;β-SiAlON-刚玉复相材料的抗氧化性优于β-SiAlON-SiC,在1400℃氧化10h后,各试样单位面积的质量增加量约为:β-SiAlON-刚玉29.07～29.79mg·cm-2,β-SiAlON-SiC35.56～36.40mg·cm-2,β-SiAlON-刚玉-SiC33.0mg·cm-2。随着β-SiAlON含量的增加,β-SiAlON-刚玉的抗热震性和抗渣侵蚀性增强,抗氧化性减弱;而β-SiAlON-SiC的抗热震性减弱,抗渣侵蚀性和抗氧化性增强。
Properties of β-SiAlON - corundum, β-SiAlON - SiC and β-SiAlON - corundum - SiC multiphase refractories and the influence of SiAlON content （25% ,40% and 55% ） on the properties during high temperature application were studied. The results indicated that the thermal shock resistance and slag corrosion resistance of βSiAlON -SiC multiphase refractories overmatched those of β-SiAION -corundum,and the quenching cycles for thermal shock resistance reached as high as over 40 times when the temperature difference was 1 100℃;. The oxidation resistance of the β-SiAlON -corundum multiphase refractories was superior to that of β-SiAlON-SiC. Having been oxidized for 10 h at 1 400℃,the mass increment of all specimens was. 29.07 - 29. 79 mg · cm^ -2 for β-SiAlON - corundum, 35.56 - 36.40 mg · cm^ -2 for β-SiAlON - SiC and 33.0 mg · cm^-2 for β-SiAlON -corundum -SiC. With the increase of SiAION content,the resistances to thermal shock and to slag corrosion of the β-SiAlON -corundum enhanced accordingly, but oxidation resistance was weakened. While for the β-SiAlON -SiC based,the thermal shock resistance decreased, but the resistances to slag corrosion and the oxidization increased.
出处
《耐火材料》
EI
CAS
北大核心
2007年第1期37-40,共4页
Refractories
关键词
β-SiAlON基复相耐火材料
抗热震性
抗渣侵蚀性
抗氧化性
β-SiAlON matrix multiphase refractories, Thermal shock resistance, Slag resistance, Oxidizationresistance
