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Textured hydroxyapatite interface onto biomedical titanium-based coatings.

Miguel Manso·P Herrero·M Fernández·M Langlet·J M Martínez-Duart
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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 degrees 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.

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Coated Materials, BiocompatibleHydroxyapatitesModels, MolecularSurface PropertiesTitaniumEvaluation StudyJournal ArticleResearch Support, Non-U.S. Gov't

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Miguel Manso, P Herrero, M Fernández, M Langlet, J M Martínez-Duart. 2003-03-15. Textured hydroxyapatite interface onto biomedical titanium-based coatings.. https://doi.org/10.1002/jbm.a.10397

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