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The composite films consisting of hydroxyapatite (HAP) submicron particles embedded in the gel composed of the titania nanoparticles were prepared on commercial Ti6A14V plates with titania buffer layer obtained by a spin-coating technique. The films were calcined in air at various temperatures, and the bioactivities of the films were investigated by immersing them in acellular simulated body fliud (SBF). X-ray diffraction(XRD), Fourier transform infrared spectroscopy (FTIR), Field emission-scanning electron microscopy(FESEM) and Energy dispersive X-ray (EDS) analysis were employed to investigate the phase formation and structure of the films before and after immersion, and the variations of Ca and P contents in SBF were measured by Inductively Coupled Plasma Spectroscopy(ICP). The results show that the as-prepared films were dense, homogeneous, all well-crystallized, and there was a close interracial bond between the film and the substrate. The characterisatics of the grown layer on the surfaces of the HAP/TiO2 films after immersion in SBF for different periods of time are specially discussed. 相似文献
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纳米羟基磷灰石的制备及结晶尺寸的控制 总被引:13,自引:0,他引:13
Nano particle hydroxyapatite was synthesized based on wet chemical precipitation method. The precipitated hydroxyapatite powders are characterized using Inductively Coupled Plasma Spectroscopy(ICP), FT-IR spectroscopy, X-ray diffraction(XRD), transmission electron microscopy(TEM), and electron diffraction(ED). Hydroxyapatite with different mean nano particle sizes in the range of 20~160 nm was prepared. Particle sizes were mainly determined by reaction temperature. Influences of degree of supersaturation, stirring intensity and reaction temperature were analyzed based on crystallization process analysis. 相似文献
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