Heat Treatment Of Cobalt-Base Alloy Surgical Implants With Hydroxyapatite-Bioglass For Surface Bioactivation
Publish Year: 1391
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-9-3_003
تاریخ نمایه سازی: 26 مرداد 1402
Abstract:
ASTM F-۷۵ Cobalt-base alloy castings are widely used for manufacturing orthopedic implants. This alloy needs both homogenization and solutionizing heat treatment after casting, as well as bioactivation of the surface to increase the ability of tissue bonding. In this study, ASTM F-۷۵ Cobalt-base substrate was heat treated at ۱۲۲۰°C for ۱ hour in contact with Hydroxyapatite-Bioglass powder in order to solutionize and homogenize the microstructure and promote surface bioactivation. For bioactivity evaluation, heat treated specimens were immersed in Simulated Body Fluid (SBF). Surface of specimens before and after the immersion was analyzed by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX) and X-Ray Diffraction (XRD). Results showed an appropriate microstructure with bioactive layer on the surface of specimens after heat treatment. In vitro result and formation of bone-like apatite layer on specimens indicated that heat treated samples were potentially suitable for bone replacement and tissue regeneration under highly loaded conditions.
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Authors
Hossein Minouei
Department of Materials Engineering, Isfahan University of Technology
MohammadHossein Fathi
Department of Materials Engineering, Isfahan University of Technology
Mahmood Meratian
Department of Materials Engineering, Isfahan University of Technology
Hossein Ghazvinizadeh
Department of Materials Engineering, Isfahan University of Technology