Characterisation of High Porous PZT Piezoelectric Ceramics by Different Techniques

被引：6

作者：

Kumar, B. Praveen ^{[1
]}

Rawal, Bhupender ^{[1
]}

Rajan, K. M. ^{[1
]}

机构：

[1] DRDO Armament Res & Dev Estab, Pune 411021, Maharashtra, India

来源：

DEFENCE SCIENCE JOURNAL | 2018年 / 68卷 / 05期

关键词：

BURPS; Freeze casting; Foam reticulation; Porous; Piezoceramics; COMPOSITES;

D O I：

10.14429/dsj.68.12315

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ultimate properties of a porous ceramic is highly process dependent. In this study, prevalent porous ceramics fabrication methods (Freeze casting, Foam reticulation and Burnable Plastic Sphere (BURPS) method) have been compared by fabricating the porous lead zirconate titanate (PZT) based piezoelectric ceramics. Field emission scanning electron microscopy (FESEM) studies were performed to analyse the pore size and distribution of the ceramics. Hydrostatic co-efficients increased tremendously on incorporation of porosity which led to Hydrostatic Figure of Merit of 7480 in Foam reticulation samples (porosity 86 per cent). The three dimensionally interconnected networks in the freeze casted samples led to lowest acoustic impedance (6 MRayls) despite not having the lowest density.

引用

页码：500 / 504

页数：5

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