Implantation of HA into Superplastic Ti-6Al-4V: Kinetics and Mechanical Behaviors of Implanted Layer
An implanted layer is produced by implantation of hydroxyapatite (HA) into superplastic Ti-6Al-4V. X-ray diffraction (XRD) analysis indicates that the surface of the implanted layer is composed of HA and Ti-6Al-4V, and line-scanning analysis confirms a mutual elemental diffusion of HA and Ti-6Al-4V. According to the scanning electron microscope (SEM) images, by increasing the implantation temperature, the thickness of the implanted layer increases. The bonding strength between implanted layer and titanium substrate is examined by conducting a friction wear test. Higher surface removal of an implanted layer is observed when as-received Ti-6A1-4V was used in the implantation process, which is an indication of higher bonding strength between implanted layer and superplastic Ti-6A1-4V. The effect of implanted layer thickness on the wear resistance is also investigated. The reduction in thickness of the implanted layer is more evident in thicker implanted layers. The results suggest that the adhesion between the implanted layer and titanium substrate is stronger than the cohesion within the implanted layer.
S. Yazdan Parast et al., "Implantation of HA into Superplastic Ti-6Al-4V: Kinetics and Mechanical Behaviors of Implanted Layer," Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 42, no. 1, pp. 219-226, Minerals, Metals and Materials Society, Jan 2011.
The definitive version is available at http://dx.doi.org/10.1007/s11661-010-0504-z
Materials Science and Engineering
Keywords and Phrases
Bonding strength; Elemental diffusion; Friction-wear test; Implantation process; Implantation temperature; Implanted layers; Linescanning; Mechanical behavior; Scanning electron microscopes; Superplastic Ti-6Al-4V; Surface removal; Ti-6al-4v; Ti6A14V; Titanium substrates; Adhesion; Diffusion bonding; Hydroxyapatite; Scanning electron microscopy; Titanium; Titanium alloys; Wear resistance; X ray diffraction; X ray diffraction analysis; Aluminum
International Standard Serial Number (ISSN)
Article - Journal
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