How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings
作者： H. Niazi , S. Yari , F. Golestani-Fard , M. Shahmiri , W. Wang
DOI: 10.1016/J.APSUSC.2015.07.035
关键词:
摘要: Abstract Titania-Alumina coatings were grown on titanium substrates by Eectrophoretic Enhanced Micro Arc Oxidation (EEMAO) technique in electrolytes containing various concentrations of alumina nanoparticles. The effect concentration surface morphology, phase composition, microhardness, and corrosion behavior was investigated at different voltages. It found that the impact microstructure actually depends voltage its effects gets more conspicuous intermediate high A finer morphology obtained higher a constant voltage. mainly consisted anatase rutile. Tialite observed 450 V 3 g l −1 alumina. formation kinetics thermodynamics tialite studied. In all voltages, samples prepared an alumina-rich electrolyte showed hardness. nanocomposite exhibited enhanced resistance compared to where became tangible when exceeded critical value (350 V). At 450 V, polarization sample 3 orders magnitude coating 1 g l processing-microstructure-properties correlation is established.
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