摘要： 为了制备性能优异的介电陶瓷材料 ， 以新型高介电陶瓷 NaCu₃Ti₃NbO₁₂ 预烧粉体为例，对不同球磨制度下的粉体粒度分布进行对 比研究。 结果表明: 高介电陶瓷 NaCu₃Ti₃NbO₁₂预烧粉体优化的球磨制度 是球磨时间为 8~10 h，球料质量比为（3~6）∶1；随着球磨时间的增加，粉体 粒径逐渐减小；采用经优化后的球磨制度处理的预烧粉体制备的介电陶 瓷在 1~100 kHz 的频率范围内相对介电常数约为 6 000。 

关键词：粒径；高介电陶瓷；预烧粉体；球磨制度

Abstract： To prepare excellent dielectric ceramic materials, the particle size distribution under different milling conditions were researched, using presintering powders of giant dielectric NaCu₃Ti₃NbO₁₂ ceramics as raw materials. The results show that the optimal milling conditions are that the milling time is 8 to 10 h and the mass ratio of ball and powder is (3-6):1. The particle size decreases as the milling time increases. The sintered ceramics prepared by the optimal presintering powders reveal relative dielectric permittivity of 6 000 in the frequency range of 1 to 100 kHz. 

Keywords: particle size; giant dielectric ceramic; presintering powder; ball-milling condition