Fabrication and corrosion property of novel Ti-based bulk glassy alloys without Ni

Fengxiang Qin; Xinmin Wang; Shengli Zhu; Asahi Kawashima; Katsuhiko Asami; Akihisa Inoue

doi:10.2320/matertrans.48.515

Fabrication and corrosion property of novel Ti-based bulk glassy alloys without Ni

Fengxiang Qin, Xinmin Wang, Shengli Zhu, Asahi Kawashima, Katsuhiko Asami, Akihisa Inoue

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

New Ni-free bulk glassy alloys in the Ti_47.5Zr _2.5+xCu_37.5-xPd_7.5Sn₅ (x = 0,5,7.5) system were fabricated by copper mold casting with diameters from 1 to 3 mm, which are expected to be applied as biomaterials. The structure, thermal stability and corrosion resistance were investigated by X-ray diffraction, differential scanning calorimetry and electrochemical measurement, respectively. Surface information after immersion in Hanks' solution was also characterized by using XPS. The results indicate that the bulk glassy alloys examined are spontaneously passivated. By anodic polarization, they show the passive current densities between 10^-2 and 10^-3 A/m². The higher corrosion resistance for the Ti-based bulk glassy alloys is attributed to the formation of stable and protective passive films enriched with titanium and zirconium.

Original language	English
Pages (from-to)	515-518
Number of pages	4
Journal	Materials Transactions
Volume	48
Issue number	3
DOIs	https://doi.org/10.2320/matertrans.48.515
Publication status	Published - 2007 Mar

Keywords

Corrosion resistance
Nickel-free
Titanium-based bulk glassy alloys

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "New Ni-free bulk glassy alloys in the Ti47.5Zr 2.5+xCu37.5-xPd7.5Sn5 (x = 0,5,7.5) system were fabricated by copper mold casting with diameters from 1 to 3 mm, which are expected to be applied as biomaterials. The structure, thermal stability and corrosion resistance were investigated by X-ray diffraction, differential scanning calorimetry and electrochemical measurement, respectively. Surface information after immersion in Hanks' solution was also characterized by using XPS. The results indicate that the bulk glassy alloys examined are spontaneously passivated. By anodic polarization, they show the passive current densities between 10-2 and 10-3 A/m2. The higher corrosion resistance for the Ti-based bulk glassy alloys is attributed to the formation of stable and protective passive films enriched with titanium and zirconium.",

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AU - Qin, Fengxiang

AU - Wang, Xinmin

AU - Zhu, Shengli

AU - Kawashima, Asahi

AU - Asami, Katsuhiko

AU - Inoue, Akihisa

PY - 2007/3

Y1 - 2007/3

N2 - New Ni-free bulk glassy alloys in the Ti47.5Zr 2.5+xCu37.5-xPd7.5Sn5 (x = 0,5,7.5) system were fabricated by copper mold casting with diameters from 1 to 3 mm, which are expected to be applied as biomaterials. The structure, thermal stability and corrosion resistance were investigated by X-ray diffraction, differential scanning calorimetry and electrochemical measurement, respectively. Surface information after immersion in Hanks' solution was also characterized by using XPS. The results indicate that the bulk glassy alloys examined are spontaneously passivated. By anodic polarization, they show the passive current densities between 10-2 and 10-3 A/m2. The higher corrosion resistance for the Ti-based bulk glassy alloys is attributed to the formation of stable and protective passive films enriched with titanium and zirconium.

AB - New Ni-free bulk glassy alloys in the Ti47.5Zr 2.5+xCu37.5-xPd7.5Sn5 (x = 0,5,7.5) system were fabricated by copper mold casting with diameters from 1 to 3 mm, which are expected to be applied as biomaterials. The structure, thermal stability and corrosion resistance were investigated by X-ray diffraction, differential scanning calorimetry and electrochemical measurement, respectively. Surface information after immersion in Hanks' solution was also characterized by using XPS. The results indicate that the bulk glassy alloys examined are spontaneously passivated. By anodic polarization, they show the passive current densities between 10-2 and 10-3 A/m2. The higher corrosion resistance for the Ti-based bulk glassy alloys is attributed to the formation of stable and protective passive films enriched with titanium and zirconium.

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