Hydroxyapatite Coatings Deposited on Titanium Substrate by Pulsed Laser Deposition

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Hydroxyapatite (HA) coatings were deposited on titanium substrate by means of pulsed laser deposition (PLD) with Nd:YAG laser. Deposition was carried out at 20 Pa of water vapor atmosphere and at room temperature. An Nd:YAG laser operating at a repetition rate of 10 HZ was used for deposition. In above deposition condition, the HA coatings deposited by PLD at room temperature are amorphous phase, and Ca/P ratio in HA coatings decreases with increasing water vapor pressure. The amorphous HA coatings were recrystallized after hydrothermal treatment at 190°C for 10 h. The bonding strength of the HA coating to the Ti substrate is up to 19.6 MPa. The structure and morphology of samples were characterized by X-ray diffraction, Fourier transform infrared reflection specterophotometry, scanning electron microcopy. The atomic ration of Ca and P was semiquantitatively determined by electron probe micro analyzer.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1670-1672

DOI:

10.4028/www.scientific.net/KEM.336-338.1670

Citation:

F. Liu et al., "Hydroxyapatite Coatings Deposited on Titanium Substrate by Pulsed Laser Deposition", Key Engineering Materials, Vols. 336-338, pp. 1670-1672, 2007

Online since:

April 2007

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Price:

$35.00

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