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Background:
The global Bio-implant market size was estimated at USD 68,686.91 million in 2019 and is expected to reach USD 72,590.27 million in 2020.
Titanium and Zirconia are the base materials used for implants. However, the problem of corrosion limits their lifetime. Therefore, searching for an effective biocompatible, wear and corrosion resistance coating is essential.
Growth of Nanodiamonds (NDs) on Ti substrates at Room Temperature
Owing to sp3 hybridized carbon bonding of diamond crystallites, NDs surfaces merge impressive mechanical properties, high biocompatibility, and antibacterial properties. In this project, we search the growth of Nanodiamond films on commercial Ti substrates by physical vapor deposition method at room temperature.
Different treatments have been explored for the growth of NDs on Ti. The results revealed that the in-situ Ar ion etching is the most effective process. The adhesion of 3 μm NDC films with 54 GPa hardness on Ti substrates was achieved via a hybrid system of ion etching gun and coaxial arc plasma deposition (IG/CAPD) [Applied Physics Express 15 (11), 115004,2022]
We report on negative bias-enhanced growth of quenched-produced diamond films on titanium using hybrid coaxial arc plasma deposition at room temperature. Optimizing the bias voltage to -40 V resulted in a spontaneous formation of a titanium carbide interfacial layer, which caused a significant increase in the adhesion strength from 16 to 48 N. Selective etching of undesired sp2–C bonded atoms and ultrafast quenching of the energetic carbon ions (C+) promoted the growth of dense sp3–C bonded atoms, achieving a superhardness of 96 GPa, comparable to natural diamond. These pioneering findings have the potential to revolutionize multifunctional materials for biomedical applications [Applied Physics Express 16, 075501 (2023)].
Enhanced Antimicrobial Activity of Titanium Alloys by Quench-Produced Diamond (Q-Dia) Coatings
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