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Apatite-forming ability of alumina and zirconia ceramics in a supersaturated Ca/P solution

Paper ID Volume ID Publish Year Pages File Format Full-Text
14127 1175 2007 5 PDF Available
Title
Apatite-forming ability of alumina and zirconia ceramics in a supersaturated Ca/P solution
Abstract

The apatite-forming ability of alumina and zirconia ceramics was investigated using a supersaturated Ca/P solution. After 2 h of immersion, a thin, needle-like nanocrystalline layer with micron-sized clusters of an irregular shape was formed on the alumina and zirconia surfaces. With a longer immersion time the layer thickness increased and the clusters became more spherical. The substrate material has little or no effect on the forming ability of the coating. The XPS Ca/P ratio for the sputtered coating on the zirconia substrate that was immersed in the Ca/P solution for 27 h was 1.66. The EDS, XRD and XPS analyses confirmed that the coated layer was hydroxyapatite. The thickness of the hydroxyapatite coating on the zirconia and alumina substrates after immersion in the Ca/P solution for 8 and 27 h was from 0.8 to 1.1 μm.

Keywords
Alumina; Zirconia; Supersaturated Ca/P solution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomolecular Engineering - Volume 24, Issue 5, November 2007, Pages 467–471
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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