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Home List of Titles Selection of the implant and coating materials for optimized performance by means of nanoindentation
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/94766
- Selection of the implant and coating materials for optimized performance by means of nanoindentation
- Saber-Samandari, Saeed; Berndt, Christopher C.; Gross, Karlis A.
- Mechanical compatibility between a coating and a substrate is important for the longevity of implant materials. While previous studies have utilized the entire coating for analysis of mechanical compatibility of the surface, this study focuses on the nanoindentation of a uniformly thermally sprayed splat. Hydroxyapatite was thermally sprayed to create a homogeneous deposit density, as confirmed by microRaman spectroscopy, of amorphous calcium phosphate. Substrates were commercially pure Ti, Ti–6Al–4V, Co–Cr alloy and stainless steel. Nanoindentation revealed that splats deposited on the different metals have similar hardness and elastic modulus values of 4.2 ± 0.2 GPa and 80 ± 3 GPa, respectively. The mechanical properties were affected by the substrate type more than residual stresses, which were found to be low. It is recommended that amorphous calcium phosphate is annealed to relieve the quenching stress or that appropriate temperature histories are chosen to relax the stress created in cooling the coating assembly.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Industrial Research Institute Swinburne
- Acta Biomaterialia, Vol. 7, no. 2 (Feb 2011), pp. 874-881
- Publication year
- FOR Code(s)
- 0903 Biomedical Engineering; 1004 Medical Biotechnology
- Droplets; Hydroxyapatite; Nanoindentation; Substrate effects; Thermal spray
- Publisher URL
- Copyright © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- Peer reviewed