添加镍对低碳Al_2O_3-ZrO_2-SiC-C连铸耐火材料制备及性能的影响  

Effects of nickel addition on preparation and properties of lowcarbon Al_2O_3-ZrO_2-SiC-C refractories in continuous casting

作　　者：黄海[1] 周秀丽[2] 马北越[3] 刘鹏举[3] 于景坤[3] 

机构地区：[1]上海梅山钢铁股份有限公司制造管理部,江苏南京210039 [2]上海梅山钢铁股份有限公司炼钢厂,江苏南京210039 [3]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《连铸》2015年第2期10-14,共5页Continuous Casting

基　　金：辽宁省教育厅项目资助(L2012079);中央高校基本科研业务费专项资金资助(N120402006)

摘　　要：以电熔刚玉、α-Al2O3、锆英石、活性炭和天然石墨为原料,镍粉为添加剂,采用反应烧结法在1 500℃保温3 h制备出低碳Al2O3-ZrO2-SiC-C复合耐火材料。对其相组成、烧结性和常温耐压强度进行了研究。结果表明,制备的耐火材料主要由刚玉、t-Zr0.92Y0.08O1.96、β-SiC和石墨组成;添加镍粉可改善耐火材料的烧结性,显著提高其耐压强度;添加质量分数为5%的镍粉后,材料的耐压强度达26.5 MPa,约是不含添加剂试样的2.6倍。Abstract： Low-carbon Al2O3-ZrO2-SiC-C refractories were fabricated via a reaction sintering process, using fused corundum, α-Al2O3, ZrSiO4, active carbon and natural graphite as main starting materials, nickel powder as additive. Phase composition, sintering properties and cold crushing strength were investigated. The research results show that the as-prepared refractories mainly consist of corundum, t-Zr0.92Y0.08O1.96、β-SIC and graphite. The sintering properties and crushing strength can be increased. The crushing strength of the sample doped with 5% nickel powder reaches 26.5 MPa, which is 2.6 times as high as that of the sample without nickel addition.

关 键 词：低碳耐火材料 连铸 Al2O3-ZrO2-SiC-C 反应烧结 镍添加剂 耐压强度 

分 类 号：TQ175.7[化学工程—硅酸盐工业]