Abstract
Magnetic performances of β-Ti68.75Nb25X6.25 (X=Fe, Mo, Sn, Ta, Zr) alloys were investigated with first-principles method. The results indicate that the alloys of TiNbSn, TiNbTa, and TiNbZr exhibit interestingly strong magnetism. The magnetic properties of the alloys mainly derive from Ti atoms. The X atom modulates the coupling between Ti and Nb producing electrons backward Ti atoms. Such electron transfer induces asymmetry of the d states of Ti atom between spin-up and spin-down channels. Such magnetic properties of β-Ti68.75Nb25X6.25 (X= Sn, Ta, Zr) show great potential in biomedical implants.
Highlights
Titanium and its alloys have been one of the most attractive biomedical implants due to their high specific strength, low modulus, good corrosion resistance, excellent biocompatibility, and good mechanical properties.1–6 Among them, Ti-Nb alloys have been extensively investigated due to their extremely low elastic modulus and shape memory behavior.7,8 the maximum transformation strain of the superelasticity is only 2.5% in solution-treated Ti27 at.% Nb alloy at room temperature due to the low critical stress for slip deformation.9 To improve the mechanical properties and shape memory behaviors of Ti-Nb alloys, it is an effective approach to add ternary elements to Ti-Nb alloys
In present work, using first-principles method, we find that the ternary alloys of TiNbSn, TiNbTa, and TiNbZr exhibit interestingly strong magnetism
The results indicate that the magnetic property of the Ti atom mainly derives from the t2g states which separates from eg states induced by the Zr
Summary
Titanium and its alloys have been one of the most attractive biomedical implants due to their high specific strength, low modulus, good corrosion resistance, excellent biocompatibility, and good mechanical properties. Among them, Ti-Nb alloys have been extensively investigated due to their extremely low elastic modulus and shape memory behavior. the maximum transformation strain of the superelasticity is only 2.5% in solution-treated Ti27 at.% Nb alloy at room temperature due to the low critical stress for slip deformation. To improve the mechanical properties and shape memory behaviors of Ti-Nb alloys, it is an effective approach to add ternary elements to Ti-Nb alloys. Titanium and its alloys have been one of the most attractive biomedical implants due to their high specific strength, low modulus, good corrosion resistance, excellent biocompatibility, and good mechanical properties.. To improve the mechanical properties and shape memory behaviors of Ti-Nb alloys, it is an effective approach to add ternary elements to Ti-Nb alloys. Technique that allows preparation of thin gels of aligned collagen using magnetic beads and a small external magnet less than 10−4 Their results show that the combination between magnetic implant materials and external magnetic field is the choice for the magnetic assistant tissue engineering. Considering the pure bulk nature of the alloys, excellent biocompatibility, and good mechanical properties, the alloys are potential biomaterials for magnetic assistant bone tissue engineering
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
