Mechanical Properties of Hydroxyapatite Ceramic Prepared from Micropowder and Nanopowder

Abstract:

In this work, hydroxyapatite ceramics were prepared from hydroxyapatite micropowder and nanopowder. The hydroxyapatite nanopowder was obtained from natural buffalo bone by using a high speed vibro-milling machine for 2 hour. The green compacted pellets of all HA powders were subsequently sintered at 1200, 1250, 1300 and 1350°C for 3 hour and then the physical and mechanical characterizations as well as microstructural evaluation have been carried out. It was found that the optimum sintering temperature were 1250°C by fabricated from nanopowder which gave the HA nanoceramic with the maximum bending strength of 78.6±2.6 MPa. This is about 200% higher than that of the sample which fabricated from HA micropowder.

• Periodical: Materials Science Forum (Volume 1074)
• Pages: 17-22
• DOI: https://doi.org/10.4028/p-5r4e0w
• Online since: November 2022
• Authors: Anirut Raksujarit, Pakpoom Ratjiranukool*
• Keywords: Bioceramics, Nanoceramics, Scanning Electron Microscopy, Sintering

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