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Piezoelectric Lead Zirconate Titanate Ceramic Fiber/Polymer Composites

 

作者: David J. Waller,   Ahmad Safari,  

 

期刊: Journal of the American Ceramic Society  (WILEY Available online 1992)
卷期: Volume 75, issue 6  

页码: 1648-1655

 

ISSN:0002-7820

 

年代: 1992

 

DOI:10.1111/j.1151-2916.1992.tb04238.x

 

出版商: Blackwell Publishing Ltd

 

关键词: lead zirconate titanate (PZT);fabrication;fibers;composites;piezoelectric properties

 

数据来源: WILEY

 

摘要:

Piezoelectric lead zirconate titanate (PZT) ceramic fiber/polymer composites were fabricated by a novel technique referred to as “relic” processing. Basically, this involved impregnating a woven carbon‐fiber template material with PZT precursor by soaking the template in a PZT stock solution. Careful heat treatment pyrolized the carbon, resulting in a PZT ceramic relic that retained the fibrous template form. After sintering, the densified relic was backfilled with polymer to form a composite. Optimized relic processing consisted of soaking activated carbon‐fiber fabric twice in an intermediate concentration (405‐mg PZT/(1‐g solution)) alkoxide PZT solution and sintering at 1285°C for 2 h. A series of piezoelectric composites encompassing a wide range of dielectric and piezoelectric properties was prepared by varying the PZT‐fiber orientation and polymer‐matrix material. In PZT/Eccogel polymer composites with PZT fibers orientated parallel to the electrodes,K= 75,d33= 145 pC/N,dh= 45 ± 5 pC/N, anddhgh= 3150 × 10−15m2/N were measured. Furthermore, in composites with a number of PZT fibers arranged perpendicular to the electroded surfaces,K= 190,d33= 250 pC/N,dh= 65 ± 2 pC/N, andd

 

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