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Interaction of hydroxyapatite–titanium at elevated temperature in vacuum environment

Paper ID Volume ID Publish Year Pages File Format Full-Text
13459 858 2004 6 PDF Available
Title
Interaction of hydroxyapatite–titanium at elevated temperature in vacuum environment
Abstract

In this study, the interaction between hydroxyapatite (HA) and titanium (Ti) at elevated temperature in vacuum environment was investigated. The 80 wt% HA–20 wt% Ti powder mixtures and 90 wt% HA–10 wt% Ti powder mixtures were dry pressed and heat-treated at 1100°C in vacuum environment. HA powders and the commercially pure Ti powders were used as controls. The heat-treated samples were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy, scanning electron microscope (SEM) and energy disperse spectra. XRD and SEM indicated densification of metallic Ti specimens during the in-vacuum heat treatment. Heat treatment of HA specimens in vacuum resulted in the loss of hydroxyl groups as well the formation of a secondary β-tricalcium phosphate phase. Metallic Ti was not observed in the in-vacuum heat-treated HA–Ti specimens. However, α-tricalcium phosphate, tetracalcium phosphate and calcium titanium oxide were observed for the in-vacuum heat-treated HA–Ti specimens. It was concluded that the in-vacuum heat-treatment process completely converted the metal–ceramics composites to ceramic composites.

Keywords
Hydroxyapatite; Titanium; Heat treatment; X-ray diffraction; Scanning electron microscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 25, Issue 15, July 2004, Pages 2927–2932
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us