Abstract
In biomedical Ti–Mg composites, Ti skeleton is conducive to the growth of new bone tissue, and the connected pore structure generated by the degradation of Mg can promote the transport and exchange of human body fluids. The combination of Ti and Mg can effectively reduce the elastic modulus of the composite and make it more suitable for human tissue. This paper attempts to prepare biomedical Ti–xMg (x = 8, 12, 16 and 20) composites by microwave sintering. In order to determine the optimal ratio of biomedical Ti–Mg composites, metallographic microscope, scanning electron microscope, X-ray diffractometer, electronic universal pressure testing machine and electrochemical workstation were used to study the effects of Mg content on the microstructure, mechanical properties and corrosion resistance of the composites. The results show that with the increase of Mg content, the pore defects of the composites decrease, the porosity decreases, the density increases, the compressive strength and elastic modulus decrease, and the corrosion resistance decreases. The compressive strength of Ti–16Mg is 385 MPa, the elastic modulus is 27.87 GPa, the self-corrosion potential is –1.14 V, the corrosion current density is 1.32 × 10–3A cm–2, and the polarization resistance is 295.83 Ohm cm2. Overall results highlighted the potential of biomedical Ti–16Mg composites for various possible orthopedic applications. And The combination of low elastic modulus, high compressive strength, improved corrosion resistance, and enhanced bioactivity makes biomedical Ti–16Mg composites fabricated by microwave sintering process potential and promising candidates for orthopedic applications.
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ACKNOWLEDGMENTS
We thank North China University of Science and Technology for supporting equipment. Any opinions, findings, conclusions and recommendation expressed in this work are those of authors and do not necessarily reflect the views of the sponsoring agencies. The authors acknowledge the National Science Foundation of China (Grant no. 51874140 and 52371026), Hebei Natural Science Foundation of China (Grant no. C2018209270), College students’ innovation and entrepreneurship training program of North China University of Science and Technology (no. X2021222).
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This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.
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Xu, Y., Zhao, S., Cai, Y. et al. Study of the Preparation and Properties of Biomedical Ti–Mg Composites. Russ. J. Phys. Chem. B 18, 9–22 (2024). https://doi.org/10.1134/S1990793124010202
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DOI: https://doi.org/10.1134/S1990793124010202