ArticleScientific reports2026
Corrosion-resistant Ti-Zr-Sn-Ta-Mo alloys with enhanced passivation for orthopedic implant applications.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hip joint degeneration is a major cause of disability worldwide, driving the need for durable implant materials with superior corrosion resistance. Titanium (Ti) alloys are widely used in orthopedic applications, yet long-term performance can be limited by electrochemical degradation in physiological environments. In this work, the influence of Mo and Ta additions on the corrosion behavior of Ti-10Zr-2Sn alloys was investigated. Three compositions-Ti-10Zr-2Sn-2Ta-6Mo, Ti-10Zr-2Sn-4Ta-4Mo, and Ti-10Zr-2Sn-6Ta-2Mo-were fabricated and evaluated in 3.5% NaCl solution using current-time response, electrochemical impedance spectroscopy, and cyclic polarization. All alloys exhibited improved passivation with extended exposure time (1-48 h), attributed to the growth of protective oxide layers. Among them, Ti-10Zr-2Sn-4Ta-4Mo demonstrated the highest polarization resistance and stability, with no evidence of pitting observed by SEM/EDS. These findings highlight the promise of tailored Ti-Zr-Sn-Ta-Mo alloys for orthopedic implants, offering improved corrosion resistance and potentially longer clinical lifetimes.
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