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Wear behavior of flame sprayed nanostructured titania coatings

  • Author / Creator
    Pourjavad, Navid
  • Various pressures of compressed air were introduced into the flame spraying torch and the protective coatings of nanostructured and conventional titania (TiO2) were deposited on low carbon steel substrates. Performance of the coatings was studied using scanning electron microscopy (SEM), hardness measurement, porosity measurement and the best coating was selected for further analyses. A Nanostructured and conventional samples were exposed to ASTM G65 and C633 standard tests and the outcome was analyzed using confocal and electron microscopy. A nanostructured coating was found to outperform the conventional counterpart due to the presence of a bimodal microstructure, which increases the plastic deformation and crack resistance of the ceramic. The nanostructured coating was analyzed using X-Ray diffraction (XRD) and eventually its crack propagation resistance was quantified. The coating was also tested in a highly corrosive H2S environment and Energy-dispersive X-ray spectroscopy (EDX) verified its fair resistance against that environment.

  • Subjects / Keywords
  • Graduation date
    2011-11
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R3Q626
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Department of Mechanical Engineering
  • Supervisor / co-supervisor and their department(s)
    • McDonald, Andre (Mechanical Engineering)
  • Examining committee members and their departments
    • Fisher, Gary (Alberta Research Council)
    • Gerlich, Adrian (Chemical and materials Engineering)