氧化铝微粉粒度对铝锆碳滑板性能的影响  

Effect of particle size of alumina micro-powder on performance of Al_(2)O_(3)-ZrO_(2)-C slide gate plate

作　　者：吉秀梅 屈金栋 张涛 Ji Xiumei;Qu Jindong;Zhang Tao(Tangshan Strong Refractories Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]唐山时创高温材料股份有限公司,唐山063000

出　　处：《耐火与石灰》2023年第5期38-39,43,共3页Refractories & Lime

摘　　要：为了进一步改善铝锆碳材质的使用性能,以板状刚玉、锆莫来石为主要原料,酚醛树脂为结合剂,研究了5种不同的氧化铝微粉对铝锆碳滑板性能的影响;结果表明:1)随着氧化铝微粉粒度逐渐减小,试样的显气孔率增加,体积密度随之减小,试样的常温力学性能降低;2)CL-370因粒度分布为双峰,有效填充了气孔,最终导致试样A4的烧后体积密度和常温抗折强度大于试样A3的该值;3)随着氧化铝微粉粒度逐渐减小,试样的高温抗折强度变大,热震稳定性变小。In order to further improve the performance of Al_(2)O_(3)-ZrO_(2)-C materials,the effect of five different alumina micro-powders on the performance of Al_(2)O_(3)-ZrO_(2)-C slide gate plates are studied with tabular corundum and zirconia-mullite as the main raw materials and phenolic resin as the binder.The results show that:1)With the particle size of alumina micro-powder decreasing gradually,the apparent porosity of the sample increases,the bulk density decreases,and the mechanical properties of the sample at room temperature decrease;2)CL-370 effectively fills the pores due to its bimodal particle size distribution,resulting in a higher bulk density after burning and flexural strength at room temperature of sample A4 than those of sample A3;3)As the particle size of alumina micro-powder gradually reduces,the high temperature flexural strength of the sample increases while the thermal shock resistance decreases.

关 键 词：铝锆碳滑板 氧化铝微粉 强度 热震稳定性 

分 类 号：TQ175.12[化学工程—硅酸盐工业]