硅溶胶/酚醛树脂对免烧成Al_2O_3-β-Sialon/Ti(C,N)/SiC-C复相耐火材料性能的影响  

Effects of Silica Sol /Phenolic Resin on Properties of Unfired Al_2O_3-β-Sialon/Ti (C,N) /SiC-C Composite Refractory Material

作　　者：王宝辰[1] 杨得鑫[1] 申见昕[1] 陈永博[1] 刘艳改[1] 

机构地区：[1]中国地质大学北京材料科学与工程学院,北京100083

出　　处：《硅酸盐通报》2013年第10期1962-1967,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金重点项目(51032007);中央高校基本科研业务费专项资金重点项目(2010ZD12);大学生创新性实验计划项目(201211415030)

摘　　要：以板状刚玉、棕刚玉、SiC、Al2O3、硅灰、金属硅、金属铝为主要原料，以硅溶胶和酚醛树脂为结合剂，制备Al2O3-β—Sialon／Ti（C，N）／SiC—C复相耐火材料，研究了硅溶胶和酚醛树脂两种结合剂对A1203-SiC-C基不定形耐火材料的线变化率、显气孔率、体积密度、常温抗折强度、常温抗压强度和抗热震性能的影响。采用X射线衍射对1100℃和1450℃热处理后的试样进行物相分析。结果表明：经1100℃温度下保温3h热处理后，试样的常温抗折强度和常温抗压强度分别达到2．43MPa和22．20MPa；浇注料经30—1100℃水冷热震循环后，测得其抗热震次数为52次。Unfired A1203-13-Sialon/Ti （ C, N）/SiC-C refractories were prepared using tabular corundum, brown corundum, SiC, A1203, silica fume, metallic silicon and aluminium micro powders as the raw materials and silica sol/phenolic resin as bonding agents. The effects of silica sol/phenolic resin on permanent linear change （ PLC）, apparent porosity, bulk density, bending strength, compression strength and thermal shock resistance were investigated. The results illustrated that after curing at 1100 ℃ for 3 h, the bending and compression strength of samples were 2.43 MPa and 22.20 MPa, respectively. The evaluated thermal shock resistance of refractories was 52 water-cooling thermal shock cycles from 30 to 1100 ℃.

关 键 词：硅溶胶 酚醛树脂 耐火材料 Β-SIALON 复相粉体 

分 类 号：TB35[一般工业技术—材料科学与工程]