Innovative fabrication of PZT pillar arrays by a colloidal approach

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Innovative fabrication of PZT pillar arrays by a colloidal approach. / Olhero, SM; Garcia-Gancedo, L; Button, Timothy; Alves, FJ; Ferreira, JMF.

In: Journal of the European Ceramic Society, Vol. 32, No. 5, 01.05.2012, p. 1067-1075.

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Olhero, SM ; Garcia-Gancedo, L ; Button, Timothy ; Alves, FJ ; Ferreira, JMF. / Innovative fabrication of PZT pillar arrays by a colloidal approach. In: Journal of the European Ceramic Society. 2012 ; Vol. 32, No. 5. pp. 1067-1075.

Bibtex

@article{c3c91b533ba74f2d824d054f7c177df4,
title = "Innovative fabrication of PZT pillar arrays by a colloidal approach",
abstract = "An innovative approach for fabricating pillar arrays for ultrasonic transducer applications is disclosed. It involves the preparation of concentrated piezoelectric lead zirconate titanate (PZT) suspensions in aqueous solutions of epoxy resin and its polymerization upon adding a polyamine based hardener. Zeta potential and rheological measurements revealed that 1 wt.% dispersant, 20 wt.% of epoxy resin and a hardener/epoxy resin ratio of 0.275 mL g(-1), were the optimized contents to obtain strong PZT samples with high green strength (35.21 +/- 0.39 MPa). Excellent ellipsoidal and semi-circle shaped pillar arrays presenting lateral dimensions lower than 10 mu m and 100 mu m height were successfully achieved. The organics burning off was conducted at 500 degrees C for 2 h at a heating rate of 1 degrees C min(-1). Sintering was then carried out in the same heating cycle at 1200 degrees C for 1 h. The microstructures of the green and sintered ceramics were homogeneous and no large defects could be detected. (C) 2011 Elsevier Ltd. All rights reserved.",
keywords = "Sensors, Suspensions, Shaping, Gel casting, PZT",
author = "SM Olhero and L Garcia-Gancedo and Timothy Button and FJ Alves and JMF Ferreira",
year = "2012",
month = may,
day = "1",
doi = "10.1016/j.jeurceramsoc.2011.11.016",
language = "English",
volume = "32",
pages = "1067--1075",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier",
number = "5",

}

RIS

TY - JOUR

T1 - Innovative fabrication of PZT pillar arrays by a colloidal approach

AU - Olhero, SM

AU - Garcia-Gancedo, L

AU - Button, Timothy

AU - Alves, FJ

AU - Ferreira, JMF

PY - 2012/5/1

Y1 - 2012/5/1

N2 - An innovative approach for fabricating pillar arrays for ultrasonic transducer applications is disclosed. It involves the preparation of concentrated piezoelectric lead zirconate titanate (PZT) suspensions in aqueous solutions of epoxy resin and its polymerization upon adding a polyamine based hardener. Zeta potential and rheological measurements revealed that 1 wt.% dispersant, 20 wt.% of epoxy resin and a hardener/epoxy resin ratio of 0.275 mL g(-1), were the optimized contents to obtain strong PZT samples with high green strength (35.21 +/- 0.39 MPa). Excellent ellipsoidal and semi-circle shaped pillar arrays presenting lateral dimensions lower than 10 mu m and 100 mu m height were successfully achieved. The organics burning off was conducted at 500 degrees C for 2 h at a heating rate of 1 degrees C min(-1). Sintering was then carried out in the same heating cycle at 1200 degrees C for 1 h. The microstructures of the green and sintered ceramics were homogeneous and no large defects could be detected. (C) 2011 Elsevier Ltd. All rights reserved.

AB - An innovative approach for fabricating pillar arrays for ultrasonic transducer applications is disclosed. It involves the preparation of concentrated piezoelectric lead zirconate titanate (PZT) suspensions in aqueous solutions of epoxy resin and its polymerization upon adding a polyamine based hardener. Zeta potential and rheological measurements revealed that 1 wt.% dispersant, 20 wt.% of epoxy resin and a hardener/epoxy resin ratio of 0.275 mL g(-1), were the optimized contents to obtain strong PZT samples with high green strength (35.21 +/- 0.39 MPa). Excellent ellipsoidal and semi-circle shaped pillar arrays presenting lateral dimensions lower than 10 mu m and 100 mu m height were successfully achieved. The organics burning off was conducted at 500 degrees C for 2 h at a heating rate of 1 degrees C min(-1). Sintering was then carried out in the same heating cycle at 1200 degrees C for 1 h. The microstructures of the green and sintered ceramics were homogeneous and no large defects could be detected. (C) 2011 Elsevier Ltd. All rights reserved.

KW - Sensors

KW - Suspensions

KW - Shaping

KW - Gel casting

KW - PZT

U2 - 10.1016/j.jeurceramsoc.2011.11.016

DO - 10.1016/j.jeurceramsoc.2011.11.016

M3 - Article

VL - 32

SP - 1067

EP - 1075

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 5

ER -