工艺参数对Al_(2)O_(3)-C耐火材料抗氧化性和抗水化性的影响  

Effect of process parameters on oxidation resistance and hydration resistance of Al_(2)O_(3)-C refractories

作　　者：张瑞[1] 孙旭东 魏瀚[1] 袁彪 王俊涛[1] 袁林[1] 刘士范 陈松林[1,3] Zhang Rui;Sun Xudong;Wei Han;Yuan Biao;Wang Juntao;Yuan Lin;Liu Shifan;Chen Songlin(Ruitai Materials Technology Co.,Ltd.,China Building Materials Academy Co.,Ltd.,Beijing 100024,China;不详)

机构地区：[1]中国建筑材料科学研究总院瑞泰科技股份有限公司,北京100024 [2]宜兴市耐火材料有限公司,江苏宜兴214265 [3]江苏省节能环保型冶金用高温耐火材料工程技术研究中心,江苏宜兴214265

出　　处：《耐火材料》2025年第1期65-69,共5页Refractories

摘　　要：为了研究各因素对Al_(2)O_(3)-C耐火材料抗氧化和抗水化性能的影响,以优化其制备工艺,以板状刚玉、Al粉、电熔锆刚玉、活性氧化铝粉、鳞片石墨为主要原料,使用热固性酚醛树脂为结合剂,采用液压成型制成?50 mm×50 mm的圆柱体试样,在埋碳气氛下对试样进行了热处理。选取Al粉加入量(加入质量分数分别为6%、9%和12%)、石墨加入量(加入质量分数分别为5%、15%和25%)、热处理温度(680、950、1 500℃)和保温时间(3、6、9 h)为研究因素,每个因素选取3个水平进行正交设计,分析了其对Al_(2)O_(3)-C耐火材料抗氧化和抗水化性能的影响。结果表明:1)Al粉加入量和石墨加入量为影响抗氧化性能的主要因素,而热处理温度和保温时间为次要因素;2)Al粉加入量和热处理温度是影响抗水化性能的主要因素,而石墨加入量和保温时间为次要因素;3)综合考虑,最优工艺为:Al粉加入量9%(w),石墨加入量5%(w),热处理温度1 500℃,保温时间6 h,制备的试样中存在柱状的Al_(4)O_(4)C,能够显著提高材料的抗氧化和抗水化性能。To optimize the preparation process of Al_(2)O_(3)-C refractories,the influence of various factors on the oxidation resistance and hydration resistance of the refractories was studied.Cylindrical samples of 50 mm×50 mm were prepared using tabular corundum,Al powder,fused zirconia corundum,activated alumina powder and graphite as the main raw materials and thermosetting phenolic resin as the binder,hydro-forming and heat treating in a carbon embedded atmosphere.The Al powder addition(6%,9% and 12%,by mass),graphite addition(5%,15% and 25%,by mass),heat treatment temperature(680,950 and 1 500 ℃) and thermal insulating time(3,6 and 9 h) were selected as the research factors,and three levels of each factor were selected for orthogonal design.The results show that:(1)the additions of Al powder and graphite are the main factors affecting the oxidation resistance,while the heat treatment temperature and thermal insulating time are the secondary factors;(2)the Al powder addition and heat treatment temperature are the main factors affecting the hydration resistance,while the graphite addition and thermal insulating time are the secondary factors;(3)comprehensively considering,the optimal process is 9% Al powder,5% graphite,heat treatment temperature of 1 500 ℃ and thermal insulating time of 6 h,and the prepared sample contains columnar Al_(4)O_(4)C,which can significantly improve the oxidation resistance and hydration resistance of the materials.

关 键 词：Al_(2)O_(3)-C耐火材料 Al_(4)O_(4)C 抗水化性能 抗氧化性能 

分 类 号：TQ175[化学工程—硅酸盐工业]