Direct ink writing of macroporous lead-free piezoelectric Ba0.85Ca0.15Zr0.1Ti0.9O3

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abstract

Direct ink writing (DIW) has become a widespread additive manufacturing technique for material engineering, but its application in lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoelectric ceramics from aqueous systems has not been reported so far to our knowledge. The main obstacle is the high extent of hydrolysis reactions undergone by the starting powders when dispersed in water, hindering the attainment of stable water-based colloidal suspensions. This paper reports on the preparation of stable aqueous inks from a deagglomerated and surface-treated powder synthesized by solid-state reaction and on DIW of macroporous lead-free piezoelectrics. Based on zeta potential and rheological measurements, the optimal amounts of processing additives (dispersant, binder, and coagulating agent) were selected to transform the initial fluid suspension to a viscoelastic paste with sufficient stiffness and stability for the printing process. Dielectric and piezoelectric properties of samples sintered under different temperatures were also investigated.

keywords

DEPOSITION; CERAMICS; LASER; FABRICATION; HYDROLYSIS; COMPONENTS; POWDERS

subject category

Materials Science

authors

Nan, B; Olhero, S; Pinho, R; Vilarinho, PM; Button, TW; Ferreira, JMF

our authors

no photo

Bo Nan

Research Fellowship
foto José Maria da Fonte Ferreira

José Maria da Fonte Ferreira

Retired Professor
no photo

Nan Bo

PhD Student
foto Paula Maria Lousada Silveirinha Vilarinho

Paula Maria Lousada Silveirinha Vilarinho

Vice Director
foto Rui Manuel de Oliveira Pinho

Rui Manuel de Oliveira Pinho

PhD Student
foto Susana Maria Henriques Olhero

Susana Maria Henriques Olhero

Assistant Professor

Groups

G2 - Photonic, Electronic and Magnetic Materials
G5 - Biomimetic, Biological and Living Materials

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

acknowledgements

CEITEC 2020 (LQ1601) National Sustainability Programme II; Erasmus+ program; UID/CTM/50011/2013

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Publication Details

type
Journal Article
year
2019
journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
volume
102
publisher
WILEY
issn
0002-7820
isbn
1551-2916
issue
6
digital object identifier
10.1111/jace.16220
web of science article identifier
WOS:000465347700018

Journal Metrics (JCR 2019)

Journal Impact Factor
3.502
Journal Impact Factor (5 yrs)
3.475
category normalized journal percentile
91.071

Citations

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