Title page for etd-0718114-104007


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URN etd-0718114-104007
Author Ji-Lun Ke
Author's Email Address No Public.
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Department Materials and Optoelectronic Science
Year 2013
Semester 2
Degree Master
Type of Document
Language English
Title Bio-electrochemical response of Ti-based thin film metallic glasses
in simulated body fluid
Date of Defense 2014-07-17
Page Count 123
Keyword
  • Biomaterials
  • Corrosion resistance
  • Bio-electrochemical properties
  • Thin films
  • Ti-based metallic glass
  • Abstract Due to the excellent mechanical properties and better corrosion resistance, Ti-based amorphous alloys have been developed and investigated rapidly. In this study, the bio-electrochemical response in simulated body fluid of the Ti-Zr-Si thin film metallic glasses (TFMGs) with different contents of titanium is measured via potentiostat. The examined materials include pure Ti, Ti57.5Zr30.8Si11.7, Ti47Zr41Si12, Ti58Zr33Si9, Ti66Zr25Si9, and Ti75Zr19Si6 (all in atomic percent). According to the results of bio-corrosion potential and current, as well as the polarization resistance, it is concluded that the Ti66Zr25Si9 TFMGs possesses the highest bio-electrochemical resistance. With an increasing content of titanium, the corrosion resistance becomes progressively better. The passive current reveals that amorphous alloys can form a more protective and denser passive film on the metallic glass surface than crystalline materials. In addition, the mechanical behavior of the Ti-Zr-Si TFMGs is better than crystalline materials. Overall, the Ti-based TFMGs possess excellent bio-corrosion, biocompatibility, and mechanical properties. As a result, Ti-based TFMGs are considered to be potential materials for bio-material applications.
    Advisory Committee
  • J. C. Huang - chair
  • Luke Hsiung - co-chair
  • T. G. Nieh - co-chair
  • Jason Shian-Ching Jang - co-chair
  • Jui-Hung Hsu - advisor
  • Files
  • etd-0718114-104007.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2014-08-18

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