Research Papers

Microstructure and Properties of the Composites: Hydroxyapatite With Addition of Zirconia Phase

[+] Author and Article Information
Agata Dudek

 Czestochowa University of Technology, Czestochowa, 42 200 Polanddudek@wip.pcz.pl

J. Eng. Mater. Technol 133(2), 021006 (Mar 04, 2011) (5 pages) doi:10.1115/1.4003104 History: Received December 11, 2009; Revised September 06, 2010; Published March 04, 2011; Online March 04, 2011

The group of bioceramics includes hydroxyapatites, which, due to their specific properties, are widely used in biotechnology. These compounds exist in skeletons of human and animal bodies. A range of advantages of implants, which contain, among other things, hydroxyapatites, results also from the level of their porosity. Recent trends that focus on the improvement in poor strength properties of HA coatings include the introduction of solid solution of Y2O3 in ZrO2 (Khalil, 2007, “Consolidation and Mechanical Properties of Nanostructured Hydroxyapatite Bioceramics by High Frequency Induction Heat Sintering,” Mater. Sci. Eng., 456, pp. 368–372; Chevalier, 2004, “Critical Effect of Cubic Phase on Aging in 3mol% Yttria-Stabilized Zirconia Ceramics for Hip Replacement Prothesis,” Biomaterials, 25, pp. 5539–5545; Inuzuka, 2004, “Hydroxyapatite-Deped Zirconia for Preparation of Biomedical Composites Ceramics,” Solid State Ionics, 172, pp. 509–513; Sung, Y. M., and Kim, D. H., 2003, “Crystallization Characteristics of Yttria-Stabilized Zirconia/Hydroxyapatite Composite Nanopowder,” J. Cryst. Growth, 254, pp. 411–417; Marciniak, J., 2002, Biomateriały, Wydawnictwo Politechniki Śląskiej, Gliwice, Poland; Park J., and Bronzino J. D., 2000, Biomaterials, CRC, Boca Raton, FL; Yoshida, 2006, “Fabrication of Structure-Controlled Hydroxyapatite/Zirconia Composite,” J. Eur. Ceram. Soc., 26, pp. 515–518). It seems essential to determine the resulting structural and strength properties in the aspect of further application of composites based on hydroxyapatite with the addition of the zirconia phase. The investigations involved ceramic composites based on HA with different amounts of the phase modified with ZrO2 yttrium dioxide.

Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 2

Diagram of the mold used for powder sintering

Grahic Jump Location
Figure 3

SEM microphotographs of the used powders: (a) hydroxyapatite powder and (b) powder of zirconium oxide modified with 8 wt %Y2O3

Grahic Jump Location
Figure 4

Microstructure of HA sinter surface

Grahic Jump Location
Figure 5

Microstructure of fissure in 50% HA+50% ZrO2 samples

Grahic Jump Location
Figure 9

Total porosity in HA+ZrO2 sinters versus content of HA phase

Grahic Jump Location
Figure 10

Changes in HA+ZrO2 sinter density depending on percentage content of the zirconia phase before and after sintering

Grahic Jump Location
Figure 11

The results of the scratch test carried out for the samples

Grahic Jump Location
Figure 8

Relationship of mean grain size in HA+ZrO2 sinters

Grahic Jump Location
Figure 7

AFM image (tapping mode) of 60% HA+40% ZrO2 sinter surface: (a) 2D surface topography, (b) contrast resulting from changes in amplitude, (c) contrast resulting from changes in lever vibration phase, and (d) 3D surface topography

Grahic Jump Location
Figure 6

AFM image (tapping mode) of HA sinter surface: (a) 2D surface topography, (b) contrast resulting from changes in amplitude, (c) contrast resulting from changes in lever vibration phase, and (d) 3D surface topography

Grahic Jump Location
Figure 1

Types of zirconium ceramics depending on modifying Y2O3 phase contents (4)



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In