Fabrication and characterization of porous hydroxyapatite and biphasic calcium phosphate ceramic as bone substitutes

Date

2004-01-01

Author

Koc, N
Timucin, M
Korkusuz, Feza

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In the present study, the calcium phosphate powders (HAP, HAP-TCP) were produced by a precipitation technique involving the use of aqueous solutions of calcium nitrate and diammonium hydrogen phosphate. Preforms of calcium phosphate ceramics were produced by using a modified slip casting technique. Porosity in the cast and in the sintered ceramic was obtained through custom made PMMA beads similar to200-300 mum size. The green ceramic samples were prepared by suspending the apatite powder and PMMA beads in an aqueous medium stabilized with an acrylic deflocculant. Porous ceramics were obtained by sintering the polymer-free preforms for 2 hours at 1000degreesC to 1200degreesC. Pore size and pore size distribution as revealed by SEM analyses were appropriate for repair of cortical defects.

Subject Keywords

Slip casting, Porous ceramic, Calcium phosphate, Biphasic, Hydroxyapatite

URI

https://hdl.handle.net/11511/51497

Journal

BIOCERAMICS 16

DOI

https://doi.org/10.4028/www.scientific.net/kem.254-256.949

Collections

Department of Physical Education and Sports, Article

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Citation Formats

N. Koc, M. Timucin, and F. Korkusuz, “Fabrication and characterization of porous hydroxyapatite and biphasic calcium phosphate ceramic as bone substitutes,” BIOCERAMICS 16, pp. 949–952, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51497.