摘要
为拓展凝胶注模成型工艺在多孔陶瓷制备中的应用,用粘度计对刚玉-尖晶石复合浆料的流变学特性进行研究,并采用萘、淀粉、聚乙烯醇作为造孔剂,用凝胶注模成型方法制备出一系列刚玉-尖晶石多孔陶瓷.经过排胶、烧结等步骤,并对成型坯体进行X-射线衍射法测定气孔率,最高气孔率为52.8%,体积密度为1.84 g.cm-3,说明凝胶注模成型是制备多孔陶瓷的有效方法.
In order to widen the application of gelcasting in porous ceramics, rheological behavior of alumina-spinel（3 ： 1） slurries is studied using viscometry. Naphtalene, fecula and polyvinyl alcohol were used as pore-forming additives. A series of alumina-spinel（3 ： 1） porous ceramics were prepared by gelcasting. After burning out sintering and measuring the porosity applying X- ray diffraction, the hightest level of porosity is found to be 52.8% and the volume density 1.84 g ·cm^-3. It is shown that the method is effective for the preparation of porous ceramics.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2005年第11期1008-1010,1023,共4页
Transactions of Beijing Institute of Technology
