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Textured hydroxyapatite interface onto biomedical titanium-based coatings

✍ Scribed by Miguel Manso; P. Herrero; M. Fernández; M. Langlet; J. M. Martínez-Duart

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
206 KB
Volume
64A
Category
Article
ISSN
1549-3296

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✦ Synopsis

Abstract

Hydroxyapatite (HAP) bioceramic coatings grown onto titanium‐nitride (TiN) buffer layers by the aerosol‐gel procedure present interfaces with a preferred growth orientation. These coatings were crystallized at 800°C and subsequently etched to ease the study of the interface by Auger electron spectroscopy depth profiling. Ion beam milling was applied to cross‐section samples to analyze the interface structures using transmission electron microscopy. At the interface, the HAP crystals showed a 〈002〉 orientation. It was shown by Auger electron spectroscopy depth profiling that O atoms diffuse into the nitride interlayer, indicating that the formation of O channels in the HAP structure is the driving force inducing the textured film. The outstanding biocompatible properties of both the materials and properties of their interface suggest that HAP/TiN structures are particularly well suited for endoprosthetic applications. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res 64A: 600–605, 2003

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