Abstract
In this study, a novel liquid precursor plasma spraying (LPPS) process was used to deposit Si, Mg, CO3 2− substituted hydroxyapatite (HA) coatings (alone and cosubstituted) onto Ti-6Al-4V substrates. Salts of silicon, magnesium, and carbonate elements were directly added into the HA liquid precursor for subsequent plasma spraying. The phase composition, structure, and morphology of all HA coatings were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy. The results indicated that the trace elements were successfully incorporated into the HA structure and nanostructured coatings were obtained for all doped HA formulations. The incorporation of trace elements into the HA structure reduced its crystallinity, especially when silicon, magnesium and carbonate ions entered simultaneously into the HA structure. FTIR spectra showed that the Si-HA and Mg-HA coatings had decreased intensities in both the O-H and P-O bands and that the CO3 2−-HA coating was mainly a B-type carbonate-substituted HA. The results showed that the LPPS process is an effective and simple method to synthesize trace element substituted biomimetic HA coatings with nanostructure.
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Acknowledgments
The authors are grateful to the Analytical & Testing Center, Sichuan University, P.R. China for the assistance in XRD, FTIR, and TEM measurements. This study was supported by the Nation High Technology Research and Development Program (863) of P.R. China (No. 2006AA02A135), and Key Technologies Research and Development Program of Chengdu (No. 10GGYB519SW-023).
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Huang, T., Xiao, Y., Wang, S. et al. Nanostructured Si, Mg, CO3 2− Substituted Hydroxyapatite Coatings Deposited by Liquid Precursor Plasma Spraying: Synthesis and Characterization. J Therm Spray Tech 20, 829–836 (2011). https://doi.org/10.1007/s11666-011-9628-y
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DOI: https://doi.org/10.1007/s11666-011-9628-y