以β-Sialon基复相为陶瓷材料的性能研究

Study on the Properties of β-Sialon Matrix Multiphase Ceramics Material

研究了β-Sialon/刚玉、β-Sialon/SiC和β-Sialon/刚玉/SiC三种复相陶瓷材料的主要性能,以及Sialon相含量变化时对性能产生的影响。结果表明:β-Sialon/SiC的抗热震性、抗渣浸蚀性优于β-Sialon/刚玉,在1100℃时,抗热震断裂次数达到40次以上。β-Sialon/刚玉的抗氧化性优于β-Sialon/SiC,在1400℃氧化10h后,各试样的单位面积增重约为:β-Sialon/刚玉,29.5mg/cm2;β-Sialon/SiC,36.0mg/cm2;β-Sialon/刚玉/SiC,33.0mg/cm2。随着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;β-Sialon/SiC的抗热震性减弱,而抗渣侵蚀性和抗氧化性增强。

The main properties of the β-SiMon/corundum, β-Sialon/SiC and β-SiMon/corundum/SiC as well as the effect of SiMon content on properties were studied. The results showed that the resistances to thermal shock and to slag corrosion of the β-SiMon/SiC are better than β-SiMon/corundum ,the fracture times of the resistance to thermal shock are up to 40. The oxidation resistance of the β-SiMon/corundum is superior to β-SiMon/SiC. After being oxidized 10 hours at 1400℃ ,the increasing weight of the samples is as follows： β-SiMon/corundum 29.5mg/cm^2, β-SiMon/SiC 36.0mg/cm^2, β-SiMon/corundum/SiC 33.0mg/cm^2. With the increase of SiMon content of multiphase refractories,the abilities in resistance to thermal shock and to slag corrosion of the β-SiMon/corundum are in- creased, but its ability in oxidation resistance is decreased. With the increase of SiMon content of them, the ability in resistance to thermal shock of β-SiMon/SiC is decreased, but its abilities in resistance to slag corrosion and the oxidation resistance are increased.