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Optimized Mechanical Properties,Corrosion Resistance and Bactericidal Ability of ti-15zr-xcu Biomedical alloys During Aging Treatment

引用

Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 304-316页

作者： Sharafadeen Kunle Kolawole Ling Ren Muhammad Ali Siddiqui Ihsan Ullah Hai Wang Shuyuan Zhang Ji Zhang Ke Yang School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Federal Polytechnic P.M.B.420OffaKwara StateNigeria

The effects of different aging conditions on the microstructure,strength,corrosion resistance,cytotoxicity and antibacterial ability of ti-15zr-xcu(3≤x≤7,wt%)(TZC)alloys were systematically *** evolution and behavior were analyzed by X-ray diffraction(XRD)patterns and scanning electron microscopy with energy-dispersive spectroscopy(SEM-EDS),while potentiodynamic polarization technique was employed to characterize the corrosion response of the alloys after solution-treatment and aging(STA).High-temperature aging at 660℃ for 4 h(660-4)gave the best combination of properties by enabling significant precipitation of the Cu-rich ti_(2)Cu and zr_(2)Cu compounds,and mild formation of the zr_(7)Cu_(10) secondary *** high kinetics at this condition was beneficial to the complete precipitation and more homogeneous distribution of the intermetallic *** led to the inhibition of dislocation movements and allowed for significantly improved mechanical strengths with added ductility,availability of more Cu ions for the desired oligodynamic activity without evoking cytotoxicity,better corrosion resistance and very high antibacterial ability(over 99.5%),thus improving the overall properties of the TZC alloys for biomedical applications.

关键词： ti-15zr-xcu alloys Solution treatment and aging Cu-rich precipitates Improved strength Corrosion resistance Antibacterial ability

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