Dielectric, mechanical, and microstructural characterization of HA–BST composites

Inthong, Suchittra; Tunkasiri, Tawee; Rujijanagul, Gobwute; Pengpat, Kamonpan; Kruea-In, Chatchai; Intatha, Uraiwan; Eitssayeam, Sukum

doi:10.1016/j.ceramint.2015.03.205

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…In theory, according to the logarithmic mixture rule [23], the dielectric properties of the two components of composite ceramic system follow the following relationship:…”

Section: Discussionmentioning

confidence: 99%

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

et al. 2016

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100-x) at.% Ba 0.6 Sr 0.4 TiO 3 -x at.% Y 2 O 3 (BST/Y 2 O 3 ) composite ceramics were prepared by conventional solid-state reaction methods. Phase constitution, microstructure, and element distribution of the composite ceramics were characterized, and the dielectric properties of BST/Y 2 O 3 composite ceramics were measured. The results revealed that some of Y 3? were dissolved into the lattice of BST and the rest remained at grain boundaries in oxide form of Y 2 O 3 . With the increase of the content of Y 2 O 3 , Curie peak of BST/Y 2 O 3 composite ceramics moved to a lower temperature, the dielectric permittivity and dielectric loss of BST/Y 2 O 3 composite ceramics decreased significantly, meanwhile, the dielectric tunability still maintains a relatively high value. Furthermore, a multipolarization mechanism model is employed to describe the field dependence of the dielectric permittivity in BST/Y 2 O 3 composite, which suggests that the existence of the second phase of Y 2 O 3 diminishes the contribution of polar clusters in BST matrix, leading to the decrease of dielectric tunability. P-E loop measurement indicates that the breakdown strength of BST/Y 2 O 3 ceramics increases during addition of Y 2 O 3 in BST matrix. Therefore, the BST/Y 2 O 3 composites with good tunable dielectric properties and enhanced breakdown strength can be exploited for phase shifter and capacitor device applications.

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“…In theory, according to the logarithmic mixture rule [23], the dielectric properties of the two components of composite ceramic system follow the following relationship:…”

Section: Discussionmentioning

confidence: 99%

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

et al. 2016

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“…The continued demand for smart piezoelectric scaffolds for tissue engineering applications and high-performance piezoelectric-based biomedical devices with high sensitivity or self-powered functionality will ensure there will be further developments in this fascinating research area [385][386][387][388][389][390].…”

Section: Clinical Perspectivementioning

confidence: 99%

Piezoelectric materials and systems for tissue engineering and implantable energy harvesting devices for biomedical applications

Jarkov

Allan

Bowen

et al. 2021

International Materials Reviews

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Recently, the development of smart materials and the study of their properties has provided an innovative approach to the field of tissue engineering. Piezoelectrics, which are able to generate electric charge in response to mechanical stress or strain have been utilised in the stimulation of electrophysiologically responsive cells , including those found in bone, muscle, and the central and peripheral nervous systems. This area of study has experienced tremendous growth in the past decade in terms of both the array of piezoelectric materials and analytical methods by which they are evaluated in relation to specific tissue types. This review provides a critical and comprehensive overview of the most recent advances in this emerging field. Furthermore, it will extend the scope to examine the most recent developments in piezoelectric biomedical devices that extract energy from physiological processes to either power biomedical implants or act as biomedical sensors .

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“…Electromagnetic fields and mechanical stresses affect bone metabolism and growth. In view of this, different approaches such as the development of composites, nanomaterials, porosity control, and so forth have been used to enhance the dielectric/polarizability of biomaterials . Improvement in dielectric properties along with mechanical and wear behavior of HDPE‐TiO 2 composites is advantageous for its use as biomaterial or substrate material applications in electronics.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites

Shaji

Shaik

Golla

2019

J of Applied Polymer Sci

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Almost fully dense high-density polyethylene (HDPE) reinforced with submicron-sized titanium dioxide (TiO 2 ) ceramic filler (up to 40 vol %) was fabricated using compression molding. More than 98.5% ρ th (theoretical density) could be obtained for all the HDPE compositions and its measured density varied between 0.94 and 2.25 g cc −1 . The hardness of HDPE increased considerably from 32.6 to 69 MPa (i.e., by two times) with the addition of 40 vol % TiO 2 . The compression strength (19.03-34.16 MPa) and modulus of elasticity (0.49-1.05 GPa) of HDPE were also found to increase with the addition of TiO 2 filler. However, the HDPE exhibited good ductility (59% strain) up to 20 vol % TiO 2 and it was reduced with the further addition of TiO 2 . The strain decreased drastically to 7.6% for HDPE-40 vol % TiO 2 . Addition of TiO 2 filler leads to a considerable decrease in wear rate and coefficient of friction (COF). The wear studies revealed that the HDPE-40% TiO 2 composite exhibited a low wear rate of 1.82 × 10 −5 mm 3 N m −1 and COF of 0.13. The dielectric constant of HDPE (at 10 kHz) was also considerably increased from 5.31 to 20.02 with the addition of TiO 2 up to 40 vol %. Achievement of such high dielectric constant for HDPE materials is the highest ever reported for HDPE.

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Dielectric, mechanical, and microstructural characterization of HA–BST composites

Cited by 8 publications

References 28 publications

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

Piezoelectric materials and systems for tissue engineering and implantable energy harvesting devices for biomedical applications

Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites

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Dielectric, mechanical, and microstructural characterization of HA–BST composites

Cited by 8 publications

References 28 publications

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics

Piezoelectric materials and systems for tissue engineering and implantable energy harvesting devices for biomedical applications

Mechanical, wear, and dielectric behavior of TiO2 reinforced high‐density polyethylene composites

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Product

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Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites