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Influence of Suspension Plasma Spraying Process Parameters on TiO2 Coatings Microstructure

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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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Notes

  1. Defined as −1 ≤ X i  ≤ +1, i = 1 to 3, variables are normalized with regard to spray parameters in such a way that X i  = −1 corresponds to the lower limit of variable, X i  = 0 corresponds to the center of experimental domain and X i  = 1 corresponds to higher limit of the variable.

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Acknowledgments

Ms. Ophelie Meunier, Maria Aguila, and Mr. Christophe Penverne of ENSCL helped in X-ray diffraction studies of samples. Professors Didier Chicot and Jacky Lesage made SEM installation available.

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Authors and Affiliations

  1. Service of Thermal Spraying at Ecole Nationale Supérieure de Chimie de Lille, BP 90108, 8, avenue Mendeleïev, Villeneuve d’Ascq, 59652, France

    Roman Jaworski, Lech Pawlowski & Agnès Le Maguer

  2. Laboratory of Mechanics Lille, URM CNRS 8107, IUT A, BP 179, rue de la Recherche, Villeneuve d’Ascq, 59653, France

    Francine Roudet

  3. Faculty of Mechanics, Wroclaw University of Technology, ul. Lukasiewicza 5, 50-371, Wroclaw, Poland

    Stefan Kozerski

Authors
  1. Roman Jaworski
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  2. Lech Pawlowski
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  3. Francine Roudet
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  4. Stefan Kozerski
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  5. Agnès Le Maguer
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Corresponding author

Correspondence to Lech Pawlowski.

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Jaworski, R., Pawlowski, L., Roudet, F. et al. Influence of Suspension Plasma Spraying Process Parameters on TiO2 Coatings Microstructure. J Therm Spray Tech 17, 73–81 (2008). https://doi.org/10.1007/s11666-007-9147-z

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