Influence of Suspension Plasma Spraying Process Parameters on TiO2 Coatings Microstructure |
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| Authors: | Roman Jaworski Lech Pawlowski Francine Roudet Stefan Kozerski Agnès Le Maguer |
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| Affiliation: | 1. Service of Thermal Spraying at Ecole Nationale Supérieure de Chimie de Lille, BP 90108, 8, avenue Mendele?ev, Villeneuve d’Ascq, 59652, France
2. Laboratory of Mechanics Lille, URM CNRS 8107, IUT A, BP 179, rue de la Recherche, Villeneuve d’Ascq, 59653, France
3. Faculty of Mechanics, Wroclaw University of Technology, ul. Lukasiewicza 5, 50-371, Wroclaw, Poland
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| Abstract: | The study aimed at optimizing the suspension plasma spraying of TiO2 coatings obtained using different suspensions of fine rutile particles in water solution onto aluminum substrates. The experiments of spraying were designed using a 23 full factorial plan. The plan enabled to find the effects of three principal parameters, i.e. electric power input to plasma, spray distance, and suspension feed rate onto microstructure of coatings, content of anatase phase and size of anatase crystals in the coatings. The microstructure of deposits was observed with scanning electron microscope (SEM) and optical microscope and their composition was characterized using energy dispersive spectrometry (EDS). The observations were made on the coatings surface and their cross-sections. The latter made it possible to determine the coatings thicknesses to be in the range from 8 to 33 μm. |
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| Keywords: | suspension plasma spraying titania coatings XRD phase analysis |
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