| Issue |
MATEC Web Conf.
Volume 417, 2025
2025 RAPDASA-RobMech-PRASA-AMI Conference: Bridging the Gap between Industry & Academia - The 26th Annual International RAPDASA Conference, joined by RobMech, PRASA and AMI, co-hosted by CSIR and Tshwane University of Technology, Pretoria
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| Article Number | 06019 | |
| Number of page(s) | 7 | |
| Section | Computational & Data-driven Modelling | |
| DOI | https://doi.org/10.1051/matecconf/202541706019 | |
| Published online | 25 November 2025 | |
Average oxidation state of Ti-Cu alloys comprised of lower temperature α-Ti(Cu) and Ti2Cu phases
1 Department of Metallurgy, School of Mining and Metallurgy and Chemical Engineering, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa, phashazh@gmail.com, emakhatha@uj.ac.za
2 Advanced Materials Division, MINTEK, 200 Malibongwe Drive, Randburg, South Africa, Majep@mintek.co.za, DonaldM@mintek.co.za,
It is known from literature that high oxidation state results in high oxygen-to-metal coverage which results in a stable protective metal-oxide layer. The metal-oxide layer that forms is a protective layer against corrosion. Current study uses the theoretical valence electron count (VEC) or electron per atom ratio (e/a) to determine average oxidation states of α- Ti(Cu) phase below eutectoid point and intermetallic Ti2Cu phase. This was done in order to study the effect of α-Ti(Cu) and Ti2Cu on average oxidation state of binary Ti-Cu alloys with various copper content. Using the theoretically determined oxidation states, it was possible to calculate average oxidation state of Ti-Cu alloys comprised of α-Ti(Cu) + Ti2Cu phases based on the volume fraction ratio. Oxidation state increased when Ti2Cu ratio increased.
© The Authors, published by EDP Sciences, 2025
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