| 先驱体法制备PZT/ZrO2复合陶瓷材料 |
| |
| 引用本文： | 郭向华,吴霞宛,吴裕功.先驱体法制备PZT/ZrO2复合陶瓷材料[J].压电与声光,2004,26(2):132-134. |
| |
| 作者姓名： | 郭向华 吴霞宛 吴裕功 |
| |
| 作者单位： | 天津大学,电信学院微电子系,天津,300072 |
| |
| 摘 要： | 研究了一种新的制备PZT／ZrO2复合陶瓷材料的方法。借助B位先驱体法，首先合成亚稳态的钙钛矿固溶体，在高温下ZrO2相从固溶体中析出得到PZT／ZrO2复合陶瓷材料。在冷却过程中，已在PZT晶粒内析出的ZrO2相发生四方到单斜的相变，伴随该相变的体积膨胀会对晶界产生压应力，起到强化晶界的作用，从而使陶瓷材料的力学性能得到明显提高。
|
| 关 键 词： | 先驱体 锆钛酸铅 复合材料 力学性能 |
| 文章编号： | 1004-2474(2004)02-0132-03 |
| 修稿时间： | 2003年2月15日 |
Preparation of PZT/ZrO2 Composites by Precursor Method |
| |
| GUO Xiang-hua,WU Xia-wan,WU Yu-gong.Preparation of PZT/ZrO2 Composites by Precursor Method[J].Piezoelectrics & Acoustooptics,2004,26(2):132-134. |
| |
| Authors: | GUO Xiang-hua WU Xia-wan WU Yu-gong |
| |
| Abstract: | A new approach for preparing PZT/ZrO_2 composites has been developed. The unstable solid solutions with perovskite structure are synthesized by B -site precursor method. PZT/ZrO_2 composites are formed when ZrO_2 phase is precipitated from solid solutions at high temperature. During cooling procedure, ZrO_2 particles precipitated within PZT grains experience tetragonal to monoclinic phase transition, companied by volume expansion. This volume expansion puts tension stress on PZT grain-boundaries. Thus, grain-boundaries are mechanically strengthened and both fracture strength and fracture toughness of the PZT/ZrO_2 composites are greatly improved |
| |
| Keywords: | precursor lead zirconate titanate composites mechanical properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
