Y. Xie, X. Liu, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, China; C. Ding, Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai, China
Radio frequency (RF) magnetron sputtering of wollastonite is a promising technique to apply thin bioactive films on bulk implant materials. In this paper, wollastonite film was prepared with titanium alloy as substrate. The as-deposited film was characterized with X-ray diffraction, X-ray photoelectron spectroscopy and atomic force microscopy. Results show that the as-deposited film is either amorphous or made up of very small crystals. Post-deposited heat treatments at 800oC, 1000oC can effectively improve the crystallinity of the film and therefore the durability in physiological environment. Apatite was formed on both of the as-deposited and heat-treated wollastonite film after incubation in simulated body fluid, which indicates that the RF magnetron sputtered wollastonite film is good candidates when rapid bone apposition is required.
Keywords: preparation, characterization, wollastonite film, magnetron sputtering
Summary: Radio frequency (RF) magnetron sputtering of wollastonite is a promising technique to apply thin bioactive films on bulk implant materials. In this paper, wollastonite film was prepared with titanium alloy as substrate. The as-deposited film was characterized with X-ray diffraction, X-ray photoelectron spectroscopy and atomic force microscopy. Results show that the as-deposited film is either amorphous or made up of very small crystals. Post-deposited heat treatments at 800oC, 1000oC can effectively improve the crystallinity of the film and therefore the durability in physiological environment. Apatite was formed on both of the as-deposited and heat-treated wollastonite film after incubation in simulated body fluid, which indicates that the RF magnetron sputtered wollastonite film is good candidates when rapid bone apposition is required.
Keywords: preparation, characterization, wollastonite film, magnetron sputtering
