抗氧化剂对Al_(2)O_(3)-SiC-C铁沟浇注料性能的影响  

Effects of antioxidants on properties of Al_(2)O_(3)-SiC-C iron trough castable

作　　者：邵荣丹[1] 何见林 丛培源[1] 夏昌勇[1] Shao Rongdan;He Jianlin;Cong Peiyuan;Xia Changyong(Wuhan Research Institute of Metallurgy Construction Co.,Ltd.,of MCC Group,Wuhan 430081,China)

机构地区：[1]中冶武汉冶金建筑研究院有限公司,武汉430081

出　　处：《耐火与石灰》2023年第5期20-25,28,共7页Refractories & Lime

摘　　要：在Al_(2)O_(3)-SiC-C铁沟浇注料抗氧化行为研究的基础上,对比研究了碳化硼、单质硅的添加及其二者复合对浇注料显微结构与性能的影响。研究结果表明:随着碳化硼加入量的增加,浇注料的抗氧化性和致密性得到改善,常温和高温力学性能、抗熔渣侵蚀和渗透能力显著提高;但是,碳化硼加入量过高可导致含硼低黏度液相的生成量增加,并降低浇注料的抗熔渣侵蚀性能。单质硅的添加及不同粒径硅粉的复合,有利于浇注料致密性和抗氧化能力的提高;控制小粒径单质硅的加入量,同时降低低熔点复合硅酸盐液相的生成量,有利于保持浇注料优良的抗氧化性、力学性能和抗熔渣侵蚀性能。Based on the study of the oxidation resistance of Al_(2)O_(3)-SiC-C iron trough castables,the effects of B4C and Si on the microstructure and properties of the castables were systematically studied.The results show that with the increase of B4C content,the oxidation resistance and compactness of castables were improved,and mechanical properties,slag corrosion and penetration resistance were significantly elevated.However,the excessive addition of B4C can increase the formation of low viscosity liquid phase containing boron and reduce the slag corrosion resistance of castables.The addition of Si and the compounding of silicon powders with different particle sizes are conducive to the improvement of compactness and oxidation resistance of castables.Controlling the amount of small particle size simple silicon and reducing the formation of low melting point composite silicate liquid phase is conducive to maintaining the excellent oxidation resistance,mechanical properties and slag corrosion resistance of castables.

关 键 词：Al_(2)O_(3)-SiC-C铁沟浇注料 抗氧化剂 力学性能 抗渣侵蚀性能 

分 类 号：TQ175.12[化学工程—硅酸盐工业]