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Microstructure, bioactivity and wear resistance of sintered composite Co-Cr-Mo/Bioglass® for medical implant applications

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1504/IJSURFSE.2014.060500
AuteurRechercher : ; Rechercher : ; Rechercher : ; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Aérospatiale
FormatTexte, Article
SujetBioactivity; Composite coatings; Composite materials; Glass bonding; Microhardness; Microstructure; Phosphate minerals; Plasma jets; Plasma spraying; Sintering; Wear of materials; Wear resistance; Apatite layers; Corrosion behaviour; Glass particles; Medical implants; Monolithic coatings; Porous structures; Resistance analysis; Simulated body fluids; Chromate coatings
Résumé
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.
Date de publication
Dans
  • International Journal of Surface Science and Engineering 8, nº 2-Mar (2014) : 264–281.
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC21272139
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Identificateur de l’enregistrementaab52aae-09cd-4cf5-a79a-42725813943d
Enregistrement créé2014-07-23
Enregistrement modifié2020-04-22
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