Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics

J P Gittings, C R Bowen, A C E Dent, I G Turner, F R Baxter, S Cartmell, J Chaudhuri

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper studies the effect of porosity on the electrical properties and polarisation behaviour of hydroxyapatite based ceramics prepared in both dense and porous form. Porosity was introduced into the hydroxyapatite using either burnt-out polymer spheres to produce isolated pores or using polymer foams to create interconnected porosity. The samples were sintered in water vapour at 1300C and polarised at 400C with a dc voltage of 3kV/cm applied for 1 hour. Thermally stimulated depolarisation current measurements were used to investigate the degree of polarisation of the hydroxyapatite ceramics and dielectric spectroscopy used to measure the ac conductivity of the materials at the polarisation temperature. The porous materials were successfully polarised and the presence of a high surface area to volume ratio in the porous samples was thought to increase the level of polarisation.
Original languageEnglish
Pages (from-to)168-176
Number of pages9
JournalFerroelectrics
Volume390
Issue number1
DOIs
Publication statusPublished - 2009

Fingerprint

Durapatite
Hydroxyapatite
Electric properties
Porosity
electrical properties
ceramics
Polarization
porosity
polarization
Polymers
Dielectric spectroscopy
Depolarization
Steam
polymers
Electric current measurement
porous materials
foams
depolarization
Water vapor
Porous materials

Cite this

Gittings, J. P., Bowen, C. R., Dent, A. C. E., Turner, I. G., Baxter, F. R., Cartmell, S., & Chaudhuri, J. (2009). Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics. Ferroelectrics, 390(1), 168-176. https://doi.org/10.1080/00150190903001011

Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics. / Gittings, J P; Bowen, C R; Dent, A C E; Turner, I G; Baxter, F R; Cartmell, S; Chaudhuri, J.

In: Ferroelectrics, Vol. 390, No. 1, 2009, p. 168-176.

Research output: Contribution to journalArticle

Gittings, JP, Bowen, CR, Dent, ACE, Turner, IG, Baxter, FR, Cartmell, S & Chaudhuri, J 2009, 'Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics', Ferroelectrics, vol. 390, no. 1, pp. 168-176. https://doi.org/10.1080/00150190903001011
Gittings, J P ; Bowen, C R ; Dent, A C E ; Turner, I G ; Baxter, F R ; Cartmell, S ; Chaudhuri, J. / Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics. In: Ferroelectrics. 2009 ; Vol. 390, No. 1. pp. 168-176.
@article{90bd4eb7ff224ccca7fd88e6fae683c6,
title = "Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics",
abstract = "This paper studies the effect of porosity on the electrical properties and polarisation behaviour of hydroxyapatite based ceramics prepared in both dense and porous form. Porosity was introduced into the hydroxyapatite using either burnt-out polymer spheres to produce isolated pores or using polymer foams to create interconnected porosity. The samples were sintered in water vapour at 1300C and polarised at 400C with a dc voltage of 3kV/cm applied for 1 hour. Thermally stimulated depolarisation current measurements were used to investigate the degree of polarisation of the hydroxyapatite ceramics and dielectric spectroscopy used to measure the ac conductivity of the materials at the polarisation temperature. The porous materials were successfully polarised and the presence of a high surface area to volume ratio in the porous samples was thought to increase the level of polarisation.",
author = "Gittings, {J P} and Bowen, {C R} and Dent, {A C E} and Turner, {I G} and Baxter, {F R} and S Cartmell and J Chaudhuri",
year = "2009",
doi = "10.1080/00150190903001011",
language = "English",
volume = "390",
pages = "168--176",
journal = "Ferroelectrics",
issn = "0015-0193",
publisher = "Taylor and Francis",
number = "1",

}

TY - JOUR

T1 - Influence of porosity on polarisation and electrical properties of hydroxyapatite based ceramics

AU - Gittings, J P

AU - Bowen, C R

AU - Dent, A C E

AU - Turner, I G

AU - Baxter, F R

AU - Cartmell, S

AU - Chaudhuri, J

PY - 2009

Y1 - 2009

N2 - This paper studies the effect of porosity on the electrical properties and polarisation behaviour of hydroxyapatite based ceramics prepared in both dense and porous form. Porosity was introduced into the hydroxyapatite using either burnt-out polymer spheres to produce isolated pores or using polymer foams to create interconnected porosity. The samples were sintered in water vapour at 1300C and polarised at 400C with a dc voltage of 3kV/cm applied for 1 hour. Thermally stimulated depolarisation current measurements were used to investigate the degree of polarisation of the hydroxyapatite ceramics and dielectric spectroscopy used to measure the ac conductivity of the materials at the polarisation temperature. The porous materials were successfully polarised and the presence of a high surface area to volume ratio in the porous samples was thought to increase the level of polarisation.

AB - This paper studies the effect of porosity on the electrical properties and polarisation behaviour of hydroxyapatite based ceramics prepared in both dense and porous form. Porosity was introduced into the hydroxyapatite using either burnt-out polymer spheres to produce isolated pores or using polymer foams to create interconnected porosity. The samples were sintered in water vapour at 1300C and polarised at 400C with a dc voltage of 3kV/cm applied for 1 hour. Thermally stimulated depolarisation current measurements were used to investigate the degree of polarisation of the hydroxyapatite ceramics and dielectric spectroscopy used to measure the ac conductivity of the materials at the polarisation temperature. The porous materials were successfully polarised and the presence of a high surface area to volume ratio in the porous samples was thought to increase the level of polarisation.

UR - http://www.scopus.com/inward/record.url?scp=76949105916&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1080/00150190903001011

U2 - 10.1080/00150190903001011

DO - 10.1080/00150190903001011

M3 - Article

VL - 390

SP - 168

EP - 176

JO - Ferroelectrics

JF - Ferroelectrics

SN - 0015-0193

IS - 1

ER -