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Permanent link (DOI): https://doi.org/10.7939/R3VQ2SJ9N

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

Descriptions

Other title
Subject/Keyword
Ti-6Al-4V
Bioactivity
Dental and Orthopedic Implants
Changing Landscape Coating
Biocompatibility
Adhesion Strength
Bioceramics
Thermal Spray
Flame Spraying
SBF
ASTM C633
Titanium
Coatings
Bone Fixation Implants
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Nelson, Greg M
Supervisor and department
McDonald, Andre (Mechanical Engineering)
Nychka, John (Chemical and Materials Engineering)
Examining committee member and department
McDonald, Andre (Mechanical Engineering)
Duke, Kajsa (Mechanical Engineering)
Ivey, Douglas (Chemical and Materials Engineering)
Nychka, John (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Materials Engineering
Date accepted
2013-08-13T09:16:48Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
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.
Language
English
DOI
doi:10.7939/R3VQ2SJ9N
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication
G. Nelson, J. Nychka, A. McDonald, Flame Spray Deposition of Titanium Alloy-Bioactive Glass Composite Coatings, J. Therm. Spray Technol. 20 (2011) 1339-1351.G. Nelson, A. McDonald, J. Nychka, Structure and Bioactivity of Ti/Bioactive Glass "Changing Landscape Coatings", Surface Innovations, Accepted for Publication on August 6, 2013G. Nelson, A. McDonald, J. Nychka, Structure, Phases, and Mechanical Response of Ti-Alloy Bioactive Glass Composite Coatings, Journal of Materials Science and Engineering - Part C (Under Review as of July 4, 2013)

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