High Piezoelectric Voltage Coefficient in Structured Lead-Free (K,Na,Li)NbO3 Particulate—Epoxy Composites

N. Kunnamkuzhakkal James; Daniella B. Deutz; Ranjita K. Bose; Sybrand van der Zwaag; Pim Groen

doi:10.1111/jace.14428

High Piezoelectric Voltage Coefficient in Structured Lead-Free (K,Na,Li)NbO₃ Particulate—Epoxy Composites

N. Kunnamkuzhakkal James, Daniella B. Deutz, Ranjita K. Bose, Sybrand van der Zwaag, Pim Groen^*

^*Corresponding author for this work

Novel Aerospace Materials

Research output: Contribution to journal › Article › Scientific › peer-review

28 Citations (SciVal)

Abstract

A high-voltage coefficient has been found in lead-free piezoelectric particulate composites based on epoxy with lead-free (K_0.50Na_0.50)_0.94Li_0.06NbO₃ (KNLN) piezoceramic particles with a natural cubic morphology. The KNLN powder used in the composites has been prepared using a new solid-state double calcination processing route. These particles were subsequently used to create random and structured KNLN-epoxy composites. Using dielectrophoresis, these natural cubical KNLN particles were structured into one-dimensional chains inside the epoxy matrix. Composites produced with these powders showed piezoelectric properties about a factor of 2 higher than those of composites processed with conventionally calcined KNLN powders. The dielectrophoretically structured KNLN-epoxy composites with optimized particle size and morphology showed excellent piezoelectric properties, which can replace lead containing piezoelectric composites for sensor and energy harvesting applications in future.

Original language	English
Pages (from-to)	3957-3963
Number of pages	7
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	12
DOIs	https://doi.org/10.1111/jace.14428
Publication status	Published - 2016

Keywords

composites
ferroelectricity/ferroelectric materials
piezoelectric materials/properties
processing

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title = "High Piezoelectric Voltage Coefficient in Structured Lead-Free (K,Na,Li)NbO3 Particulate—Epoxy Composites",

abstract = "A high-voltage coefficient has been found in lead-free piezoelectric particulate composites based on epoxy with lead-free (K0.50Na0.50)0.94Li0.06NbO3 (KNLN) piezoceramic particles with a natural cubic morphology. The KNLN powder used in the composites has been prepared using a new solid-state double calcination processing route. These particles were subsequently used to create random and structured KNLN-epoxy composites. Using dielectrophoresis, these natural cubical KNLN particles were structured into one-dimensional chains inside the epoxy matrix. Composites produced with these powders showed piezoelectric properties about a factor of 2 higher than those of composites processed with conventionally calcined KNLN powders. The dielectrophoretically structured KNLN-epoxy composites with optimized particle size and morphology showed excellent piezoelectric properties, which can replace lead containing piezoelectric composites for sensor and energy harvesting applications in future.",

keywords = "composites, ferroelectricity/ferroelectric materials, piezoelectric materials/properties, processing",

author = "{Kunnamkuzhakkal James}, N. and Deutz, {Daniella B.} and Bose, {Ranjita K.} and {van der Zwaag}, Sybrand and Pim Groen",

year = "2016",

doi = "10.1111/jace.14428",

language = "English",

volume = "99",

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AU - Kunnamkuzhakkal James, N.

AU - Deutz, Daniella B.

AU - Bose, Ranjita K.

AU - van der Zwaag, Sybrand

AU - Groen, Pim

PY - 2016

Y1 - 2016

N2 - A high-voltage coefficient has been found in lead-free piezoelectric particulate composites based on epoxy with lead-free (K0.50Na0.50)0.94Li0.06NbO3 (KNLN) piezoceramic particles with a natural cubic morphology. The KNLN powder used in the composites has been prepared using a new solid-state double calcination processing route. These particles were subsequently used to create random and structured KNLN-epoxy composites. Using dielectrophoresis, these natural cubical KNLN particles were structured into one-dimensional chains inside the epoxy matrix. Composites produced with these powders showed piezoelectric properties about a factor of 2 higher than those of composites processed with conventionally calcined KNLN powders. The dielectrophoretically structured KNLN-epoxy composites with optimized particle size and morphology showed excellent piezoelectric properties, which can replace lead containing piezoelectric composites for sensor and energy harvesting applications in future.

AB - A high-voltage coefficient has been found in lead-free piezoelectric particulate composites based on epoxy with lead-free (K0.50Na0.50)0.94Li0.06NbO3 (KNLN) piezoceramic particles with a natural cubic morphology. The KNLN powder used in the composites has been prepared using a new solid-state double calcination processing route. These particles were subsequently used to create random and structured KNLN-epoxy composites. Using dielectrophoresis, these natural cubical KNLN particles were structured into one-dimensional chains inside the epoxy matrix. Composites produced with these powders showed piezoelectric properties about a factor of 2 higher than those of composites processed with conventionally calcined KNLN powders. The dielectrophoretically structured KNLN-epoxy composites with optimized particle size and morphology showed excellent piezoelectric properties, which can replace lead containing piezoelectric composites for sensor and energy harvesting applications in future.

KW - composites

KW - ferroelectricity/ferroelectric materials

KW - piezoelectric materials/properties

KW - processing

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ER -

High Piezoelectric Voltage Coefficient in Structured Lead-Free (K,Na,Li)NbO₃ Particulate—Epoxy Composites

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Keywords

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