利用冷冻干燥法制备多孔氧化铝陶瓷.采用扫描电镜和压汞仪,系统讨论了影响多孔陶瓷微观结构的主要因素.结果表明:固体含量显著影响试样的强度和气孔率;粘结剂的添加对于多孔结构的保持很重要;冷冻温度和烧结温度对最终的孔径分布和微观结构有较大影响.
Porous ceramics with complex pore structure were synthesized by freeze-casting process. The porous structures could be controlled and maintained quite well during the drying and firing processes: the porosity and the strength are substantially affected by the starting slurry concentration, the adhesive is important for keeping the main structures, and finally pore size distribution as well as the microstructure are directly influenced by the cooling and sintering temperature.
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