Excellent protection of mild steel in sodium chloride solution for a substantial period of time using a hybrid nanocoating of poly vinyl alcohol and Titania
作者： P.K. Jaseela , Mathew Kuruvilla , Linda Williams , Chinju Jacob , K.O. Shamsheera
DOI: 10.1016/J.ARABJC.2020.07.005
关键词: Chemical engineering 、 Vinyl alcohol 、 Fourier transform infrared spectroscopy 、 Coating 、 Chromate conversion coating 、 Chemistry 、 Corrosion 、 Nanocomposite 、 Composite number 、 Polarization (electrochemistry)
摘要: Abstract The production of eco-friendly hybrid sol–gel coatings for long term protection metallic substrates from aggressive environments was one the emerging areas, competing with conventional chromate and phosphate coatings. Herein, a nanocomposite has been synthesized TiO2 PVA through novel sol-gel route structure morphology same characterized using X-ray diffraction, FTIR, UV–Vis spectroscopy, FESEM EDAX, AFM studies. flower-like structured composite offers excellent corrosion properties in NaCl solution sea water salinity. Impedance polarization studies were carried out to monitor anticorrosion performance materials coating. This coating on mild steel 98% inhibition efficiency NaCl. influence loading its effect have also investigated. It is found that an optimum weight 20 wt% required beneficial resistance. 92% registered by coated MS after 40 days exposure quite encouraging compared many recent reports. Ti–O–Ti, Fe-Ti-O linkage along compactness adherence material together contribute better blocking corrosion.
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