SiO_(2)微粉添加量对Al_(2)O_(3)-SiO_(2)质喷涂料性能的影响  

Effect of microsilica addition on properties of Al_(2)O_(3)-SiO_(2)spraying mix

作　　者：蔡玮 鞠茂奇 陈金凤 丛培源[1] Cai Wei;Ju Maoqi;Chen Jinfeng;Cong Peiyuan(Wuhan Metallurgical Construction Research Institute Co.,Ltd.of MCC,Wuhan 430081,Hubei,China;不详)

机构地区：[1]中冶武汉冶金建筑研究院有限公司,湖北武汉430081

出　　处：《耐火材料》2023年第3期241-244,共4页Refractories

摘　　要：以电瓷废料、高铝矾土、广西白泥、CA50水泥以及SiO_(2)微粉为原料,制备Al_(2)O_(3)-SiO_(2)质喷涂料,研究了SiO_(2)微粉添加量(质量分数分别为0、1.5%、3%和4.5%)对烘干及不同温度热处理后试样的显气孔率、常温抗折强度、物相组成和显微结构的影响。结果表明:1)随着SiO_(2)微粉添加量的增多,110℃烘干后喷涂料的显气孔率逐渐减小,常温抗折强度逐渐增大。2)随着SiO_(2)微粉添加量的增多,1100和1300℃热处理后喷涂料的显气孔率均呈先减小后增大的变化趋势,并且均在SiO_(2)微粉添加量为1.5%(w)时最小;1100和1300℃热处理后喷涂料的常温抗折强度均呈先增大后减小的变化趋势,并且均在SiO_(2)微粉添加量为3.0%(w)时最大。综合考虑,SiO_(2)微粉的最佳添加量为3.0%(w)。Electric porcelain waste,high alumina bauxite,Guangxi white clay,CA50 cement and microsilica were used as raw materials to prepare Al_(2)O_(3)-SiO_(2)spraying mix.The effects of the microsilica addition(0,1.5%,3%and 4.5%,by mass)on the apparent porosity,cold modulus of rupture,phase composition and microstructure of the samples after drying and heat treatment at different temperatures were studied.With the increase of the microsilica addition,the apparent porosity of the samples after drying at 110℃gradually decreases,and the cold modulus of rupture gradually increases.With the increase of the microsilica addition,the apparent porosity of the samples after heat treatment at 1100 and 1300℃,respectively,decreases first and then increases,and reaches the lowest when the microsilica addition is 1.5%.The cold modulus of rupture of the spraying mix after heat treatment at 1100 and 1300℃increases first and then decreases,and reaches the maximum when the microsilica addition is 3.0%.By comprehensive consideration,the optimum addition of microsilica is 3.0%.

关 键 词：SiO_(2)微粉 喷涂料 显气孔率 常温抗折强度 

分 类 号：TQ175[化学工程—硅酸盐工业]