【摘要】 本文采用 90年代初发明的注凝成型技术制备微孔梯度陶瓷材料。在研究不同粒度Al2 O3 和高温粘结剂混合物浆料制备方法的基础上 ,进一步研究了固体含量、高温粘接剂、颗粒度等对制品的烧成收缩率、气孔率、强度、孔径及其分布和渗透性等物理性能的影响。研究发现固体含量在 40 %～ 5 0 % (体积分数 )的范围内对制品物理性能影响不大 ;液体粘结剂比固体粘结剂在提高制品的物理性能方面更加优良更多还原

【Abstract】 Micro porous gradient ceramics were prepared by gel casting which was invented in the early 90’s.The method of producing slurries of low viscosity was studied,the influences of solid loading,high temperature sintering aid(solid and liquid)and sintering temperature on the shrinkage rate,strength,porosity,pore size,distribution,and permeability of products were studied.The effects of these parameters on porosity,average pore size,capillary,circuity and permeability were also studied.It is found that high temperature liquid sintering aid is better than solid one,and solid loading(40vol.%～50vol.%)of the slurry is not sensitive to improving physical performance of the products.更多还原