Changing Landscape Coatings for Bioactive Bone Fixation Implants via Flame Spray Deposition

  • Author / Creator
    Nelson, Greg M
  • Owing to the bio-inert nature of load-bearing alloys and the brittle nature of bioactive materials there is a need to develop a composite bioactive material suitable for load-bearing applications. To fulfill this need, a new composite coating of a load-bearing alloy and a resorbable bioactive material was proposed. This composite coating system is termed a “changing landscape coating” owing to the replacement of the bioactive material with bone tissue over time. In this work, titanium or titanium alloy powder was blended with 45S5 bioactive glass powder and deposited with a flame spray torch. The effects of the type of titanium alloy, powder size distribution, and deposition condition were examined through experimental measurement and theoretical process modeling. It was shown that Ti-6Al-4V-based porous coatings, rather than titanium, may be a superior choice due to the potentially osteoproductive bioactive glass, the potential ability to support viable tissue ingrowth, and the comparable strength to dense coatings.

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  • Type of Item
  • Degree
    Master of Science
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    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.