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首页> 外文会议>International Conference on X-ray and Related Techniques in Research and Industry >Effect of La_2O_3 Additions on Microstructure, Morphology and Pressure Sensing Behaviour of PZT Based Ceramics Sintered in Al_2O_3 Environment
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Effect of La_2O_3 Additions on Microstructure, Morphology and Pressure Sensing Behaviour of PZT Based Ceramics Sintered in Al_2O_3 Environment

机译：La_2O_3添加对Al_2O_3环境中PZT基陶瓷微观结构，形态和压力传感性能的影响

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摘要

Effect of La_2O_3 addition on microstructure, morphology and pressure sensing behaviour of (Pb_(1-x), La_x)(Zr_(0.52), Ti_(0.48))O_3 based ceramics was studied in three different compositions of La_2O_3, namely x ＝ 0.10, 0.12 and 0.15. The samples were prepared through a conventional solid-state reaction method using high purity metal oxides powders. In order to control the PbO losses due to high sintering temperature, a novel approach was explored whereby the samples were sintered in Al_2O_3 environment. Structural investigation using XRD revealed that all samples exhibited a tetragonal cre. However the c/a ratios exhibited a decreasing trend as the La_2O_3 conteystal structurnt increased, indicating that (Pb_(1-x), La_x)(Zr_(0.52), Ti_(0.48))O_3 crystals gradually evolved towards pseudocubic structure. SEM micrographs showed that in all samples the grains have uniform pebble stone morphology. The average grain size reduced from ～ 4.5 μm to ～ 3.0 μm with the increment of La_2O_3 content. The performance of pressure sensing behaviour which was investigated using custom-made pressure chamber showed that sample with composition of x ＝ 0.10 exhibited the best piezoelectric properties with high pressure sensitivity, good stability and repeatability.
机译：La_2O_3加成上的微观结构，形态和压力感测的行为的效果（Pb_（1-x）中，La_x）（Zr_（0.52），TI_（0.48））O_3系陶瓷在La_2O_3，的三种不同的组合物的研究，即X = 0.10 ，0.12和0.15。样品通过使用高纯度的金属氧化物粉末的传统的固态反应方法制备。为了控制的PbO损失，由于高烧结温度，一种新颖的方法进行了探讨，由此在样品中Al_2O_3的环境进行烧结。利用X射线衍射结构的调查显示，所有样品表现出四方CRE。然而，C / A比率表现出降低的趋势作为La_2O_3 conteystal structurnt升高，表明（Pb_（1-x）中，La_x）（Zr_（0.52），TI_（0.48））O_3晶体朝向仿立方体结构逐渐演变。 SEM照片显示，所有样品中的颗粒具有均匀卵石形态。的平均晶粒尺寸从〜4.5微米减小到〜3.0微米与La_2O_3含量的增量。的，其使用定制的压力室调查压力感测的行为的性能表明，样品与为x = 0.10组合物表现出与高压灵敏度，稳定性好和可重复性的最佳的压电特性。

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