| abstract |
The invention discloses a preparation method of a zirconia-mullite porous ceramic material, which takes alumina and zircon sand as main raw materials, yttrium oxide as a stabilizing agent, aluminum fluoride as an additive, adopts a forming mode of combining polyurethane foam impregnation and gel curing, and prepares the zirconia-mullite porous ceramic material with an acicular mullite whisker structure by an in-situ synthesis technology, solvent volatilization and organic matter pyrolysis in a blank form a porous structure, and has the characteristics of high porosity (more than 80 percent), uniform pore size distribution, and excellent high-temperature mechanical property and thermal shock resistance. |