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Dip coated silicon-substituted hydroxyapatite films

Paper ID Volume ID Publish Year Pages File Format Full-Text
2559 115 2006 8 PDF Available
Title
Dip coated silicon-substituted hydroxyapatite films
Abstract

Silicon-substituted hydroxyapatites have been deposited onto Ti6Al4V substrates by sol–gel technology. The Ca10(PO4)6−x−y(SiO4)x(CO3)y(OH)2−x+y coatings obtained, with silicon contents up to x = 1 (2.8 wt.%), show a homogeneous and crack-free surface composed of particles smaller than 20 nm. The silicon enters into the apatite structure in the form of SiO44- groups that partially substitute the PO43- groups. The Si content and the Ca/P molar ratio of the coatings agree with those originally introduced in the sols. Layers with thicknesses around 600 nm show adhesion strengths superior to 20 MPa as determined by a pull-out test. The formation of an apatite layer onto these coatings after immersion in a simulated body fluid is enhanced by the presence of silicon.

Keywords
Silicon-substituted hydroxyapatite; Coatings; Sol–gel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 2, Issue 5, September 2006, Pages 567–574
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
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