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X-RAY INVESTIGATION OFTi-DOPED HYDROXYAPATITE COATING BY MECHANICAL ALLOYING

Author

Listed:
  • A. HANNORA

    (Al-Farabi Kazakh National University, 050038 Almaty, Kazakhstan)

  • A. MAMAEVA

    (Institute of Physics and Technology, 050032 Almaty, Kazakhstan)

  • Z. MANSUROV

    (Al-Farabi Kazakh National University, 050038 Almaty, Kazakhstan)

Abstract

Ti-addition to hydroxyapatites[Ca10(PO4)6(OH)2–HA]with 5.0 wt.%Ticontent, was successfully deposited on titanium substrate by mechanical alloying (MA) method. The X-ray Diffraction (XRD) data indicated that some changes take place in the HA lattice as well as in theTisubstrate. The coating thickness of the as-synthesized sample was about 91.1 μm. Ti incorporation into the apatite structure caused lattice shrinkage. The heat treated sample shows that dominant phase was HA up to 600°C. TheTi-doped HA steadily transformed to β- and α-tricalcium phosphate at 800°C. Scanning Electron Microscopy (SEM) observations revealed cracks above the temperature of 600°C. The presence of cracks could be due to the difference in coefficients of thermal expansion ofTi-doped HA andTi-alloy substrate.

Suggested Citation

  • A. Hannora & A. Mamaeva & Z. Mansurov, 2009. "X-RAY INVESTIGATION OFTi-DOPED HYDROXYAPATITE COATING BY MECHANICAL ALLOYING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(05), pages 781-786.
    • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:05:n:s0218625x09013256
    DOI: 10.1142/S0218625X09013256
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