Interaction of hydroxyapatite-titanium at elevated temperature in vacuum environment

Yunzhi Yang, Kyo Han Kim, C. Mauli Agrawal, Joo L. Ong

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Original languageEnglish
Pages (from-to)2927-2932
Number of pages6
JournalBiomaterials
Volume25
Issue number15
DOIs
StatePublished - Jul 2004

Fingerprint

Durapatite
Vacuum
Titanium
Hydroxyapatite
Hot Temperature
Temperature
Powders
Phosphates
Heat treatment
Ceramics
X-Ray Diffraction
Electron microscopes
Electrons
Scanning
X ray diffraction
Titanium oxides
Cermets
Composite materials
Fourier Transform Infrared Spectroscopy
Densification

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

Cite this

Interaction of hydroxyapatite-titanium at elevated temperature in vacuum environment. / Yang, Yunzhi; Kim, Kyo Han; Agrawal, C. Mauli; Ong, Joo L.

In: Biomaterials, Vol. 25, No. 15, 07.2004, p. 2927-2932.

Research output: Contribution to journalArticle

Yang, Yunzhi ; Kim, Kyo Han ; Agrawal, C. Mauli ; Ong, Joo L. / Interaction of hydroxyapatite-titanium at elevated temperature in vacuum environment. In: Biomaterials. 2004 ; Vol. 25, No. 15. pp. 2927-2932.
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abstract = "In this study, the interaction between hydroxyapatite (HA) and titanium (Ti) at elevated temperature in vacuum environment was investigated. The 80wt{\%} HA-20wt{\%} Ti powder mixtures and 90wt{\%} HA-10wt{\%} 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.",
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KW - Heat treatment

KW - Hydroxyapatite

KW - Scanning electron microscopy

KW - Titanium

KW - X-ray diffraction

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