Deposition of Micro-Porous Hydroxyapatite/Tri-Calcium Phosphate Coating on Zirconia-Based Substrate

Scaffold‐like hydroxyapatite/tri‐calcium‐phosphate (HA/TCP) coatings have been deposited on strong zirconia‐substrates using a unique HA‐slip coating‐deposition and coating‐substrate co‐sintering process. Bending strength of such layered composites is over 300 MPa, higher than the upper strength lim...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2012-04, Vol.95 (4), p.1212-1215
Main Authors: Sultana, Rumana, Yang, Jingzhou, Hu, Xiaozhi
Format: Article
Language:English
Subjects:
Bend strength
Biomedical materials
Bones
Ceramic sintering
Coating
Deposition
Hydroxyapatite
Porosity
Protective coatings
Substrates
Surgical implants
TCP (protocol)
Zirconium
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Summary:Scaffold‐like hydroxyapatite/tri‐calcium‐phosphate (HA/TCP) coatings have been deposited on strong zirconia‐substrates using a unique HA‐slip coating‐deposition and coating‐substrate co‐sintering process. Bending strength of such layered composites is over 300 MPa, higher than the upper strength limit of natural bones. Thick scaffold‐like HA‐coatings with open pores larger than 100 μm can be deposited onto the micro‐porous HA/TCP surface using the same technique. Such load‐bearing “HA‐scaffolds” with adequate bending strength and large open pore structures provide useful options as load‐bearing bone implants.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2012.05114.x