本文用水热法制备出长 10～ 5 0 μm的纤维钛酸钡 ,将钛酸钡纤维与钛酸钡粉体复合 ,压片烧结 ,利用纤维的晶轴定向性和粉体的添隙效应制备新型功能材料 .通过SEM、HP4192A等分析方法对材料的微结构和铁电、介电性能进行分析 .结果表明 ,纤维与粉体发生固溶 ,但纤维的定向性仍然存在 ;纤维的加入有利于提高复合体系的介电常数 . In this paper, 10 ~ 50 μm long barium titanate fibers were prepared by hydrothermal method. The barium titanate fibers were compounded with barium titanate powders, and the mixture was pressed into sheets and sintered. The orientation of the fibers and the tipping effect of the powders New functional materials.The microstructure, ferroelectric and dielectric properties of the materials were analyzed by SEM, HP4192A and other analytical methods.The results showed that the fibers and powders were solid solution, but the orientation of the fibers still existed; the addition of fiber was beneficial Improve the dielectric constant of the composite system.