低碳Al_2O_3-β-SiAlON烧成滑板的热机械性能及显微结构  

Thermomechanical properties and microstructure of low carbon Al_2O_3-β-SiAlON slide plate

作　　者：岳卫东[1] 钟香崇[1] 石凯 

机构地区：[1]郑州大学高温功能材料河南省重点实验室,郑州450052 [2]河南省伯马股份有限公司

出　　处：《耐火材料》2006年第5期342-345,共4页Refractories

摘　　要：用10%的矾土基β-SiAlON替代普通铝碳烧成滑板中的部分炭素材料和刚玉,研究了低碳Al2O3-β-SiAlON烧成滑板的高温抗折强度、抗热震性能及显微结构.研究结果显示：这种滑板材料与普通烧成铝碳滑板材料相比较,碳含量降低了4%～6%,但在中、高温 （1000～1400 ℃） 强度有明显提高,抗热震性略有改善.其主要原因是引入的矾土基β-SiAlON与刚玉之间有较紧密的直接结合,起到了强化、韧化的作用.Low carbon Al2O3 -β-SiAION slide plate was fabricated by using 10% bauxite based β-SiAION powder as substitute for some carbon material and corundum in the common Al2O3 -C silde plate. HMOR, thermal shock resistance and microstructure were then investigated. The results show that compared with common Al2O3 -C material, its carbon content reduced by 4% -6%, modulus of rupture at intermediate and high temperature（1000 - 1400 ℃） increased significantly and the thermal shock resistance slightly improved. This is likely attributed to the formation of direct bonding between corundum and β-SiAION in the matrix which improve strengthening and toughening effect.

关 键 词：低碳耐火材料 矾土基Β-SIALON 滑板 热机械性能 显微结构 

分 类 号：TQ175.712[化学工程—硅酸盐工业]