Microstructure and mechanical properties of nanostructured ti-22nb-10zr coatings
Microstructure and mechanical properties of nanostructured ti-22nb-10zr coatings
The design of implants and functional prostheses requires superficial modifications that promote fast and lasting osseointegration. Magnetron sputtering enables to design nanostructured and textured ß-Ti rich Ti-22Nb-10Zr (wt.%) coatings with variable mechanical properties (hardness and Young's modulus). Depending on the magnitude of the bias voltage used during deposition of the coating, martensitic transformation from the unstable ß (bcc) to a” (orthorhombic) phase is activated. This transformation induces compressive residual stresses modifying the tensile strength, hardness and Young's modulus. The residual stresses were measured by nanoindentation, the microstructure and phase evolution were characterized by X-ray diffraction. The spatial phase distribution was determined by transmission electron microscopy. The calculated real hardness increases from 2.1 to 4.1 GPa as the bias voltage is increased from 0 to -148 V. The calculus confirms that the coating has a non-linear elastic behavior.
Biomaterials, Martensitic phase transformation, Nano-mechanical characterization, Non-toxic beta-rich Ti coatings, Residual stresses
661-666
Frutos, Emilio
13a2cdf5-8c80-47a8-a224-a0ea04b8f9c4
Karlík, Miroslav
df29ecf1-6f1e-4713-a15a-82b321804596
Jiménez, José Antonio
8475c2b1-4404-4703-99b0-efad708c3eb7
Polcar, Tomáš
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
2020
Frutos, Emilio
13a2cdf5-8c80-47a8-a224-a0ea04b8f9c4
Karlík, Miroslav
df29ecf1-6f1e-4713-a15a-82b321804596
Jiménez, José Antonio
8475c2b1-4404-4703-99b0-efad708c3eb7
Polcar, Tomáš
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Frutos, Emilio, Karlík, Miroslav, Jiménez, José Antonio and Polcar, Tomáš
(2020)
Microstructure and mechanical properties of nanostructured ti-22nb-10zr coatings.
In METAL 2020 - 29th International Conference on Metallurgy and Materials, Conference Proceedings.
Tanger Ltd.
.
(doi:10.37904/metal.2020.3540).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The design of implants and functional prostheses requires superficial modifications that promote fast and lasting osseointegration. Magnetron sputtering enables to design nanostructured and textured ß-Ti rich Ti-22Nb-10Zr (wt.%) coatings with variable mechanical properties (hardness and Young's modulus). Depending on the magnitude of the bias voltage used during deposition of the coating, martensitic transformation from the unstable ß (bcc) to a” (orthorhombic) phase is activated. This transformation induces compressive residual stresses modifying the tensile strength, hardness and Young's modulus. The residual stresses were measured by nanoindentation, the microstructure and phase evolution were characterized by X-ray diffraction. The spatial phase distribution was determined by transmission electron microscopy. The calculated real hardness increases from 2.1 to 4.1 GPa as the bias voltage is increased from 0 to -148 V. The calculus confirms that the coating has a non-linear elastic behavior.
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metal2020_frutos_metal
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Published date: 2020
Additional Information:
Funding Information:
Financial support of the European Regional Development Fund (project No. CZ.02.1.01/0.0/0.0/15_003/0000485) is gratefully acknowledged.
Publisher Copyright:
© 2020 TANGER Ltd., Ostrava.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Venue - Dates:
29th International Conference on Metallurgy and Materials, METAL 2020, , Brno, Czech Republic, 2020-05-20 - 2020-05-22
Keywords:
Biomaterials, Martensitic phase transformation, Nano-mechanical characterization, Non-toxic beta-rich Ti coatings, Residual stresses
Identifiers
Local EPrints ID: 453994
URI: http://eprints.soton.ac.uk/id/eprint/453994
PURE UUID: 826aa0c7-959e-4751-8061-6af67c4dd462
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Date deposited: 27 Jan 2022 18:09
Last modified: 18 Mar 2024 03:19
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Contributors
Author:
Emilio Frutos
Author:
Miroslav Karlík
Author:
José Antonio Jiménez
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