101. Microstructure, bioactivity and wear resistance of sintered composite Co-Cr-Mo/Bioglass® for medical implant applications
- Author
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Feng Cai, Colin Miyata, Qi Yang, and Xiao Huang
- Subjects
Wear resistance ,Materials science ,Simulated body fluid ,Composite number ,Medical implants ,Sintering ,Chromate coatings ,Glass bonding ,engineering.material ,Bioactivity ,Resistance analysis ,Indentation hardness ,Plasma jets ,Corrosion ,Apatite layers ,Coating ,Corrosion behaviour ,Composite material ,Microstructure ,Simulated body fluids ,Mechanical Engineering ,Composite coatings ,Composite materials ,Plasma spraying ,Glass particles ,Monolithic coatings ,Surfaces and Interfaces ,Porous structures ,Surfaces, Coatings and Films ,Wear of materials ,Phosphate minerals ,Microhardness ,Stellite ,engineering - Abstract
A sintered Co-Cr-Mo/Bioglass® composite coating, developed for medical implant application, is examined and compared to plasma-sprayed and sintered monolithic Co-Cr-Mo coatings. In addition to microstructure and wear resistance analysis, the bioactivities and corrosion behaviours of various coatings are assessed using simulated body fluid (SBF) immersion. The sintered Co-Cr-Mo/Bioglass® composite and monolithic Co-Cr-Mo coatings have more porous structure than the plasma sprayed Co-Cr-Mo coating. Although the Co-Cr-Mo/Bioglass® composite coating has adequate bonding between Co-Cr-Mo powder and glass particles, the wear resistance is lower than the plasma sprayed Co-Cr-Mo and Stellite 21 substrate. After SBF immersion, calcium is present on the Co-Cr-Mo/Bioglass composite coating, but not on the Co-Cr-Mo coating. It indicates the formation of an apatite layer on the Co-Cr- Mo/Bioglass composite coating and potentially better bioactivity than the monolithic coatings. Copyright © 2014 Inderscience Enterprises Ltd.
- Published
- 2014
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