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Ultrasound assisted deposition of silica coatings on titanium

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Abstract

We present a novel ultrasound assisted method for silica coating of titanium surfaces. The coatings are formed by "smashing" silica nanoparticles onto activated titanium surface in solution using intense ultrasonic field. Homogeneous silica coatings are formed by deposition of dense multiple layers of silica nanoparticles. Since the nanoparticles also grow during the reaction, the layers of the coatings have smaller particles on the substrate and larger particles towards the surface. The thickness of the coatings can be controlled with several experimental parameters. Silica layers with thickness over 200 nm are readily obtained.

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Elsevier

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Chemistry, Physical chemistry, Materials science, Coatings and films, Physics, Applied physics, Condensed matter

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Applied Surface Science

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10.1016/j.apsusc.2012.07.074

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