Microstructure and performance of titanium oxide coatings sprayed by oxygen-acetylene flame

0350866 - ÚFP 2011 RIV CZ eng C - Conference Paper (international conference)
Ctibor, Pavel - Štengl, Václav - Zahálka, F. - Murafa, Nataliya
Microstructure and performance of titanium oxide coatings sprayed by oxygen-acetylene flame.
Proceedings of the 6th European meeting on solar chemistry and photocatalysis: Environmental applications (SPEA 6). Prague: ICT Prague Press, 2010 - (Krýsa, J.), s. 144-145. ISBN 978-80-7080-750-7.
[European meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA6)/6th./. Prague (CZ), 13.06.2010-16.06.2010]
R&D Projects: GA AV ČR IAAX00430803
Institutional research plan: CEZ:AV0Z20430508; CEZ:AV0Z40320502
Keywords : flame spraying * photocatalysis * TiO2
Subject RIV: JK - Corrosion ; Surface Treatment of Materials

TiO2 nano-powders were agglomerated by a spray drying process for applying to thermal spraying. A conventional oxygen-acetylene flame torch was used to deposit porous partially nanostructured TiO2 coatings. Steel substrates were used as a support for tested samples. Scanning Electron Microscopy, X-ray microanalysis and X-ray diffraction were performed to study the morphology and the crystalline phases of the titania coatings. Optical bandgap and kinetics of the acetone decomposition was studied too. The best results were obtained for the powder which is available as a commercial spray feedstock. This powder seems to be most resistant against the reducing atmosphere in the jet of combustive gasses.
Permanent Link: http://hdl.handle.net/11104/0006149