Issue |
MATEC Web Conf.
Volume 406, 2024
2024 RAPDASA-RobMech-PRASA-AMI Conference: Unlocking Advanced Manufacturing - The 25th Annual International RAPDASA Conference, joined by RobMech, PRASA and AMI, hosted by Stellenbosch University and Nelson Mandela University
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Article Number | 03004 | |
Number of page(s) | 11 | |
Section | Material Development | |
DOI | https://doi.org/10.1051/matecconf/202440603004 | |
Published online | 09 December 2024 |
Nanomechanical, tribological and electrochemical characterization of Co-Cr-Mo ternary alloys fabricated via spark plasma sintering
1 Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa
2 Centre for Energy and Electric Power, Tshwane University of Technology, Pretoria, South Africa
* Corresponding author: johnabe.fm@gmail.com
This research investigated the nanomechanical properties, tribological performance, and electrochemical behavior of Co-Cr-Mo ternary alloys. The ternary alloys were fabricated using spark plasma sintering and characterized using a nanoindenter, tribometer, and galvanostat/potentiostat to evaluate their properties accordingly. The findings indicated that the concentrations of Cr and Mo promoted the development of the FCC phase (γ-Co) and the HCP phase (ε-Co). As Mo content increased, the alloys showed better densification and improved nanomechanical characteristics (hardness and modulus of elasticity). Wear resistance was enhanced, with mean COF values and specific wear rates decreasing with Mo increasing content. Electrochemical tests showed that Mo content influenced the Co-Cr alloy's electrochemical behavior, with the Co-Cr-7Mo alloy showing the best electrochemical characteristics for biomedical application. The study elucidates the fabrication and performance of Co-Cr-Mo alloys, widely utilized in biomedical sector.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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