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Characterization of infiltration process of AZ91E alloy in Ti64 scaffolds

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Abstract

This paper studies the fabrication process of magnesium-reinforced Ti6Al4V (Ti64)-based materials for biomedical applications. Highly porous Ti64 compacts with a 50 vol.% volume fraction of pores were fabricated using the space holder technique, followed by infiltration with, AZ91E alloy. Characterization of infiltrated samples was performed by X-ray diffraction, scanning electron microscopy, and computed microtomography. It was determined by dilatometry that infiltration of AZ91E alloy is achieved at 800 °C. Pore characteristics and its connectivity in porous compacts were analyzed before and after infiltration. Results shows that the space holder technique achieved full connectivity. After infiltration, it was determined that small pores are fully filled but some large pores cannot be fully filled, which results in isolated pores. It was concluded that the process is promising for the development of biodegradable materials in the human body.

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The raw/processed data required to reproduce these findings cannot be shared at this time as the data also form part of an ongoing study.

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Acknowledgments

The authors would like to thank to the CIC of the UMSNH. We also want to thank M.Sc. Marco A. Paredes Guillén for his technical support during the computed tomography image acquisition and Dante Arteaga for the 3D image analysis. N. Camacho acknowledges the kind support from CONAHCYT through her research Fellowship Cátedras CONACYT.

Funding

This research was supported by [the National Council of Humanities, Science and Technology CONAHCYT via postdoctoral stage of J.L. Cabezas-Villa [CVU 511121].

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JLC-V contributed to investigation and writing—original draft. JL-R contributed to formal analysis and project administration. AMG-C contributed to experimental setup and writing—review & editing. OJ contributed to conceptualization and validation. NC contributed to supervision and experimental setup. LO contributed to writing—original draft and formal analysis.

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Correspondence to L. Olmos.

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Cabezas-Villa, J.L., Lemus-Ruiz, J., García-Carrillo, A.M. et al. Characterization of infiltration process of AZ91E alloy in Ti64 scaffolds. MRS Advances 8, 1112–1116 (2023). https://doi.org/10.1557/s43580-023-00696-x

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