Abstract
We put forward a protocol combining laser treatment and acid etching to obtain multiscale micro/nano-texture surfaces of titanium alloy implant. Firstly, the operational parameters of the laser were optimized to obtain an optimum current. Secondly, the laser with the optimum operational parameters was used to fabricate micro pits. Thirdly, multiple acid etching was used to clean the clinkers of micro pits and generate submicron and nanoscale structures. Finally, the bioactivity of the samples was measured in a simulated body fluid. The results showed that the micropits with a diameter of 150 μm and depth of 50 μm were built successfully with the optimized working current of 13 A. In addition, submicron and nanoscale structures, with 0.5-2 μm microgrooves and 10-20 nm nanopits, were superimposed on micro pits surface by multiple acid etching. There was thick and dense HA coating only observed on the multiscale micro/nano-textured surface compared with polished and micro-textured surface. This indicated that the multiscale micro/nano-texture surface showed better ability toward HA formation, which increased the bioactivity of implants.
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Funded by the National Natural Science Foundation of China (51175306 and 51575320), the Tai Shan Scholar Foundation (TS20130922), and the Fundamental Research Funds for the Central Universities (2014JC020)
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Zhang, R., Wan, Y., Ai, X. et al. Fabrication of micro/nano-textured titanium alloy implant surface and its influence on hydroxyapatite coatings. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 440–445 (2016). https://doi.org/10.1007/s11595-016-1389-5
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DOI: https://doi.org/10.1007/s11595-016-1389-5