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2025-11-02

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cc-by-nc-nd (c) Clave, Genís et al., 2025
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/229942

Comparison of microstructure and mechanical properties of Fe3Al/TiC coatings produced by cold gas spray and high velocity oxygen fuel

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https://doi.org/10.1016/j.intermet.2025.109052

Resum

Fe3Al powders reinforced with TiC were synthesized and deposited as coatings using Cold Gas Spraying (CGS) and High-Velocity Oxy-Fuel (HVOF) techniques. Fe3Al intermetallic compounds are known for their excellent resistance to sulfidizing and carburizing environments. However, their mechanical properties can be enhanced through reinforcement with TiC particles. The Fe3Al/TiC feedstock powder was produced via agglomeration and sintering, resulting in a homogeneous distribution of TiC particles around the Fe3Al matrix. Coatings were deposited onto AISI 316L stainless steel substrates and characterized using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDX), as well as adhesion and erosion tests. The results indicate that CGS coatings exhibit lower oxidation levels, whereas HVOF coatings demonstrate superior adhesion and hardness due to their denser microstructure and greater particle deformation. Hardness increased with the incorporation of TiC. Erosion testing revealed that CGS coatings performed better, attributed to their reduced brittleness compared to HVOF coatings. These findings highlight the potential of Fe3Al/TiC coatings for high-temperature and wear-resistant applications. Moreover, the study demonstrates that comparable performance can be achieved using CGS as with HVOF for depositing Fe3Al/TiC intermetallic coatings.

Matèries

Compostos intermetàl·lics, Propietats mecàniques, Revestiment metàl·lic

Matèries (anglès)

Intermetallic compounds, Mechanical properties, Metal coating

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Articles publicats en revistes (Ciència dels Materials i Química Física)

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CLAVE, Genís, et al. Comparison of microstructure and mechanical properties of Fe3Al/TiC coatings produced by cold gas spray and high velocity oxygen fuel. Intermetallics. 2025. Vol. 188. ISSN 0966-9795. [consulted: 6 of July of 2026]. Available at: https://hdl.handle.net/2445/229942

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