Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Kanyane, Lehlogonolo Rudolf; Popoola, Abimbola Patricia Idowu; Pityana, Sisa; Tlotleng, Monnamme

doi:10.3390/ma15020544

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Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Lehlogonolo Rudolf Kanyane

^1,*

Abimbola Patricia Idowu Popoola

¹,

Sisa Pityana

and

Monnamme Tlotleng

^2,3

Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria 0001, South Africa

Laser Materials Processing Group, National Laser Center CSIR, Pretoria 0001, South Africa

Department of Mechanical Engineering Science, University of Johannesburg, Auckland Park Campus, Johannesburg 2012, South Africa

Author to whom correspondence should be addressed.

Academic Editors: Daniela Iannazzo and Mutlu Özcan

Materials 2022, 15(2), 544; https://doi.org/10.3390/ma15020544

Received: 28 October 2021 / Revised: 25 November 2021 / Accepted: 30 November 2021 / Published: 12 January 2022

(This article belongs to the Special Issue Future Trends in Materials for Tissue Engineering Applications)

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Abstract

The lives of many people around the world are impaired and shortened mostly by cardiovascular diseases (CVD). Despite the fact that medical interventions and surgical heart transplants may improve the lives of patients suffering from cardiovascular disease, the cost of treatments and securing a perfect donor are aspects that compel patients to consider cheaper and less invasive therapies. The use of synthetic biomaterials such as titanium-based implants are an alternative for cardiac repair and regeneration. In this work, an in situ development of Ti-Al-xNb alloys were synthesized via laser additive manufacturing for biomedical application. The effect of Nb composition on Ti-Al was investigated. The microstructural evolution was characterized using a scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS). A potentiodynamic polarization technique was utilized to investigate the corrosion behavior of TiAl-Nb in 3.5% NaCl. The microhardness and corrosion behaviour of the synthesized Ti-Al-Nb alloys were found to be dependent on laser-processing parameters. The microhardness performance of the samples increased with an increase in the Nb feed rate to the Ti-Al alloy system. Maximum microhardness of 699.8 HVN was evident at 0.061 g/min while at 0.041 g/min the microhardness was 515.8 HVN at Nb gas carrier of 1L/min, respectively. View Full-Text

Keywords: lens; microhardness; densification; anti-corrosion

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MDPI and ACS Style

Kanyane, L.R.; Popoola, A.P.I.; Pityana, S.; Tlotleng, M. Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies. Materials 2022, 15, 544. https://doi.org/10.3390/ma15020544

AMA Style

Kanyane LR, Popoola API, Pityana S, Tlotleng M. Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies. Materials. 2022; 15(2):544. https://doi.org/10.3390/ma15020544

Chicago/Turabian Style

Kanyane, Lehlogonolo R., Abimbola P.I. Popoola, Sisa Pityana, and Monnamme Tlotleng. 2022. "Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies" Materials 15, no. 2: 544. https://doi.org/10.3390/ma15020544

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