Effect of Zircon Addition on Properties of Corundum Porous Materials  

作　　者：CHEN Haonan LIU Xin ZHANG Shiming LI Ying WANG Di JIA Quanli 

机构地区：[1]Henan Key Laboratory of High Temperature Functional Ceramics,School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450052,China [2]Henan Building Materials Research and Design Institute Co.,Ltd.,Zhengzhou 450002,China

出　　处：《China's Refractories》2024年第1期7-13,共7页中国耐火材料（英文版）

基　　金：This work was sponsored by the National Natural Science Foundation of China(No.52172029);the Natural Science Foundation of Henan(No.202300410473).

摘　　要：This paper aims to improve the corrosion resistance of dispersive purging plugs.White fused corundum particles and fine powder,α-Al_(2)O_(3) micropowder,Cr_(2)O_(3) micropowder,Guangxi clay and zircon powder were used as the main raw materials.The mass ratio of white fused corundum particles and fine powder was fixed at 85:15,and 0,1%,2%,or 3%(by mass)of zircon fine powder was added to replace the same amount of white fused corundum fine powder.The corundum porous material was prepared by the particle stacking pore-forming method at 1650℃for 3 h.The effect of the zircon addition on the properties and microstructure of porous materials was investigated.The results show that:after adding zircon,the permeability of the porous material increases,the cold and hot strengths increase obviously,and the expansion rate after firing decreases.When the addition of zircon is 2%,the comprehensive performance of the specimen is optimal with the smallest linear change rate and the highest permeability.

关 键 词：porous materials zircon fines purging plug PERMEABILITY 

分 类 号：TF304[冶金工程—冶金机械及自动化]