A new measurement method of piezoelectric properties of single ceramic fibres

Steinhausen, R.; Kern, S.; Pientschke, C.; Beige, H.; Clemens, Frank; Heiber, Juliane

doi:10.1016/j.jeurceramsoc.2009.06.013

Cited by 16 publications

(15 citation statements)

References 19 publications

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“…Moreover, a high dielectric constant ( ε r ≈ 3323) and the piezoelectric coefficient ( d 33 ≈ 300 pm/V) measured on the fiber fabricated through Route 3 gave evidence for the best processing route out of the three trials attempted here. The dielectric constant and piezoelectric charge coefficient of the fibers were within similar ranges with the values reported in the literature for commercial PZT fibers.…”

Section: Resultssupporting

confidence: 85%

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Mensur‐Alkoy

Kaya

Sarı

et al. 2019

Int J Applied Ceramic Tech

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Piezoelectric ceramic fibers are widely used in piezocomposite devices. The various methods that are used to draw ceramic fibers differ in the way the fiber form is obtained, which in return closely affects the density, uniformity and the properties of the fibers that are obtained at the end. In this study, the processing-property relationship in the piezoceramic fibers drawn using the alginate gelation method is investigated, with a focus on the mechanical and electrical properties of individual fibers.Fibers with a Weibull strength of 65.3 MPa, remanent polarization of 22 μC/cm 2 and a total bipolar field induced strain of 0.25% under an electric field of 2.5 kV/mm, piezoelectric coefficient of 300 pm/V and dielectric constant of 3323 were produced.1-3 piezocomposite devices prepared from these fibers had a 6 dB higher free-field voltage sensitivity and a 50% wider bandwidth compared to a solid disk transducer of the same dimensions. K E Y W O R D Sceramic matrix composites, electrical properties, fibers, piezoelectric materials/properties 1372 | MENSUR-ALKOY Et AL.

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Section: Resultssupporting

confidence: 85%

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Mensur‐Alkoy

Kaya

Sarı

et al. 2019

Int J Applied Ceramic Tech

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“…34 The binder and carbon black removal (debinding step) of the co-extruded fibers was performed by thermal degradation. The strain coefficient d Ã 33 represents the average strain per unit of electric field over the cycle.…”

Section: (3) Microstructure and Propertiesmentioning

confidence: 99%

“…Besides the significant standard deviation attained for the d Ã 33 calculations, mainly for the extruded fibers, the values for the d Ã 33 determined within this work are in good agreement with previous ones reported in the literature for PZT thin fibers. 34 The binder and carbon black removal (debinding step) of the co-extruded fibers was performed by thermal degradation. Based on TG-analysis of the carbon black feedstock (Table VI), the debinding step was carried out in an oxygen atmosphere to accelerate the decomposition of the organic parts and to minimize effects on densification of the PZTceramic.…”

Section: (3) Microstructure and Propertiesmentioning

confidence: 99%

Processing and Properties of Co‐Extruded Lead Zirconate Titanate Fibers

et al. 2011

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The development of the whole process chain, starting with feedstock preparation and rheological characterization, followed by debinding, sintering, and the final properties is described for the fabrication of lead zirconate titanate (PZT) fibers through the co‐extrusion process. The PZT‐polymer and carbon black (CB)‐polymer feedstocks were prepared using a high‐shear mixer and their rheological behavior was characterized by torque rheometry and by the evaluation of viscosity models which consider the influence of the volume fraction of solids on the relative viscosity Based on the rheology of the compounds, a feedstock containing 58 vol% of PZT and another containing 35 vol% of CB were selected for the co‐extrusion process. By varying the viscosity ratio between the co‐extruded materials, three different co‐extrusion investigations were carried out. To detect any defect present in the green co‐extruded monofilament composites that may become evident only after debinding, sintering or even at the test stage, X‐ray tomography was performed. To establish the developed co‐extrusion process chain, the microstructure, and the electromechanical properties of successfully co‐extruded and sintered fibers (ø ~250 μm) were compared with fibers produced by conventional thermoplastic extrusion. The extruded fibers revealed a maximum strain of 0.39%, whereas this value was decreased to 0.22% for the co‐extruded ones.

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“…Considering the influence of internal bias field and due to not having a closed loop as seen in Fig. (b), the large‐signal

d_{33}^{*}

was calculated using the modified formula as,

d_{33}^{*}

= ( S max − S rem )/ E max ( S max and S rem are maximum and remnant strain; E max is the maximum unipolar strain) and the obtained values are listed in the Table . The maximum

d_{33}^{*}

value of 182 pm/V is found for x = 15, which is comparable to KNN‐ and BNT‐based system where

d_{33}^{*}

value ranges from 75 pm/V for SrTiO 3 ‐modified KNN to 400 pm/V for Li‐, Ta‐, Sb‐modified KNN, and 240 pm/V for BNT–BKT binary system to 567 pm/V for BNT–BT–BKT ternary system .…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Electrical Properties of New Lead‐free (100−x)(Li_0.12Na_0.88)NbO₃–xBaTiO₃ (0 ≤ x ≤ 40) Piezoelectric Ceramics

Mitra

Kulkarni

2015

J. Am. Ceram. Soc.

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New lead-free (100 -x)Li 0.12 Na 0.88 NbO 3 -xBaTiO 3 (0 ≤ x ≤ 40) piezoelectric ceramics have been synthesized using conventional ceramics processing route. Structural analysis revealed an existence of morphotropic phase boundary (MPB), separating orthorhombic and tetragonal phases, between the BaTiO 3 content, x = 10-12.5. A partial phase diagram has been established based on temperature-dependent permittivity data for this new system and a almost vertical temperature-independent MPB is observed. Improvement in electrical properties near MPB (e.g., for x = 12.5; e r = 8842 at T m and 795 at room temperature, d 33 = 30 pC/N, k p = 12.0%, Q m = 162, P r = 11.2 lC/cm 2 , E c = 19.2 kV/cm, dÃ 33 = 174 pm/V) is observed, and is attributed to the ease of polarization rotation due to coexistence of orthorhombic and tetragonal phases. The results show that these materials could be suitable for piezoelectric vibrators and ultrasonic transducer applications. The sample with x = 25, also exhibited high dielectric permittivity, e r = 2400, and low dielectric loss, tand = 0.033 at room temperature which could be suitable for capacitor (X7R/Z5U) applications.

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A new measurement method of piezoelectric properties of single ceramic fibres

Cited by 16 publications

References 19 publications

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Processing and Properties of Co‐Extruded Lead Zirconate Titanate Fibers

Synthesis and Electrical Properties of New Lead‐free (100−x)(Li_0.12Na_0.88)NbO₃–xBaTiO₃ (0 ≤ x ≤ 40) Piezoelectric Ceramics

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A new measurement method of piezoelectric properties of single ceramic fibres

Cited by 16 publications

References 19 publications

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Mechanical and electromechanical properties of piezoelectric ceramic fibers drawn by the alginate gelation method

Processing and Properties of Co‐Extruded Lead Zirconate Titanate Fibers

Synthesis and Electrical Properties of New Lead‐free (100−x)(Li0.12Na0.88)NbO3–xBaTiO3 (0 ≤ x ≤ 40) Piezoelectric Ceramics

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Synthesis and Electrical Properties of New Lead‐free (100−x)(Li_0.12Na_0.88)NbO₃–xBaTiO₃ (0 ≤ x ≤ 40) Piezoelectric Ceramics