title: Improvement of bio-corrosion resistance for Ti42Zr40Si15Ta3 metallic glasses in simulated body fluid by annealing within supercooled liquid region.
abstract: The effects of the nanocrystalline phases on the bio-corrosion behavior of highly bio-friendly Ti42Zr40Si15Ta3 metallic glasses in simulated body fluid were investigated, and the findings are compared with our previous observations from the Zr53Cu30Ni9Al8 metallic glasses. The Ti42Zr40Si15Ta3 metallic glasses were annealed at temperatures above the glass transition temperature, Tg, with different time periods to result in different degrees of α-Ti nano-phases in the amorphous matrix. The nanocrystallized Ti42Zr40Si15Ta3 metallic glasses containing corrosion resistant α-Ti phases exhibited more promising bio-corrosion resistance, due to the superior pitting resistance. This is distinctly different from the previous case of the Zr53Cu30Ni9Al8 metallic glasses with the reactive Zr2Cu phases inducing serious galvanic corrosion and lower bio-corrosion resistance. Thus, whether the fully amorphous or partially crystallized metallic glass would exhibit better bio-corrosion resistance, the answer would depend on the crystallized phase nature.
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
authors.forename: C H
authors.initials: CH
authors.lastname: Huang
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
authors.forename: J J
authors.initials: JJ
authors.lastname: Lai
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
authors.forename: T Y
authors.initials: TY
authors.lastname: Wei
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
authors.forename: Y H
authors.initials: YH
authors.lastname: Chen
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; School of Mechanical Engineering, Liaoning Shihua University, Fushun 113001, PR China.
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
authors.forename: S Y
authors.initials: SY
authors.lastname: Kuan
authors.affiliation: Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan. Electronic address: jacobc@mail.nsysu.edu.tw.
authors.forename: J C
authors.initials: JC
authors.lastname: Huang
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D001826:Body Fluids; D003343:Corrosion; D005898:Glass / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry
chemical_list: D001672:Biocompatible Materials; D015040:Zirconium; D014025:Titanium
keywords: Corrosion; Crystallization; Metallic glass; Polarization measurement