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Enhanced Structural and Tribological Performance of Nanostructured Ti–15Nb Alloy for Biomedical Applications

  • Low modulus β-type Ti-15Nb alloys were prepared by subjecting them to different sintering temperatures (800, 900, 1000 and 1100 °C) and their morphological and structural properties were evaluated. X-ray diffraction analysis was used for the morphological characterization which indicated that the mean pore and crystallite size continuously decreased with increasing sintering temperature to reach the lowest values of 41 nm and 27.5 nm at 1100 °C, respectively. Moreover, the higher sintering temperature resulted in higher relative density, greater hardness and young’s modulus of the Ti-15Nb alloys. Wear tests were conducted using a ball-on-plate type Oscillating tribometer, under different applied loads (2, 8 and 16 N) to evaluate their tribological characterization. The wear rate and friction coefficient were lower at higher sintering temperature. This enhancement in tribological properties was attributed to a grain refinement. The Ti-15Nb alloys sintered at 1100 °C showed the best tribological performance.

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Author: Mamoun Fellah, Naouel Hezil, Mohamed Zine Touhami, Aleksei ObrosovORCiD, Sabine WeißORCiDGND, Egor B. Kashkarov, Andrey M. Lider, Alex Montagne, Alain Iost
URL:https://www.sciencedirect.com/science/article/pii/S2211379719300506
DOI:https://doi.org/10.1016/j.rinp.2019.102767
ISSN:2211-3797
Title of the source (English):Results in Physics
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2019
Tag:Biomaterial; Milling; Sintering; Ti-15Nb alloys; Tribological properties; β-Ti Alloys
Volume/Year:15
Number of pages:7
Article number:102767
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Metallkunde und Werkstofftechnik
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