【摘要】 研究了机械合金化制备PLZT陶瓷.实验结果表明,采用纳米TiO2原料,球磨5h就能得到PLZT粉体,而采用微米TiO2原料,球磨30h也只有少量的PLZT出现.可见纳米粉体在机械合金化制备PLZT粉体过程中起了重要的作用.机械合金化制备的PLZT粉体具有很好的烧结性能,在1000℃的烧结条件下可以得到致密度达97％的PLZT陶瓷,并且所得PLZT陶瓷的压电性能和铁电性能与其它文献报道的相当.这为实现铁电陶瓷与电极低温共烧打下了基础.更多还原

【Abstract】 The preparation of PLZT ceramics via mechanical alloying was studied. The result shows that PLZT powders can be synthesized via high energy ball milling for 5h with nano-TiO2 powders, while only very weak PLZT peak can be found from the XRD pattern of the oxide mixtures milled for 30 h without nano-TiO2 powders. So nano TiO2 particles are very important to synthesize PLZT powders via mechanical alloying. High density PLZT ceramics were obtained by using the ball milled powders by sintering from 1000 to 1200℃. Piezoelectric and ferroelectric measurement results of the sintered PLZT ceramics were comparable with the values reported in the literature for the same composition.更多还原