Advanced search
Publication Cover
Ferroelectrics Volume 390, 2009 - Issue 1
Submit an article Journal homepage
179
Views
6
CrossRef citations to date
0
Altmetric
SECTION C: FERROELECTRICS, RELAXORS AND PHASE TRANSITIONS

Influence of Porosity on Polarisation and Electrical Properties of Hydroxyapatite Based Ceramics

J. P. Gittings Materials Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK, BA2 7AY
,
C. R. Bowen Materials Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK, BA2 7AY
,
A. C.E. Dent Materials Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK, BA2 7AY
,
I. G. Turner Materials Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK, BA2 7AY
,
F. R. Baxter Materials Research Centre, Department of Mechanical Engineering, University of Bath, Bath, UK, BA2 7AY; Department of Chemical Engineering, University of Bath, Bath, UK, BA2 7AY
,
S. Cartmell Institute of Science and Technology in Medicine, University of Keele, Staffordshire, UK, ST4 7QB
&
J. Chaudhuri Department of Chemical Engineering, University of Bath, Bath, UK, BA2 7AY
 show all
Pages 168-176 | Received 26 Aug 2008, Published online: 20 Sep 2010
 
Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days

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 1300°C and polarised at 400°C 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.

Acknowledgments

The authors wish to show their appreciation and gratitude to the EPSRC (EP/D013798/1) and Great Western Research (HEFCE), UK for their funding of this research.

Log in via your institution

Access through your institution

Log in to Taylor & Francis Online

Restore content access

Restore content access for purchases made as guest
Purchase options * Save for later

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 2,630.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.