Title page for etd-0325118-180935


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URN etd-0325118-180935
Author Ting-yu Wei
Author's Email Address No Public.
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Department Materials and Optoelectronic Science
Year 2017
Semester 2
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title Fabrication and characterization of Ti-Ta-Nb alloys
for bio-implant purposes
Date of Defense 2018-03-17
Page Count 151
Keyword
  • microstructure
  • corrosion
  • resistance
  • biocompatibility
  • mechanical
  • properties
  • Ti alloys
  • Abstract Ideal bio-implant biomaterials should possess good biocompatibility, high corrosion resistance and low Young’s modulus simultaneously. Materials with low Young’s modulus can prevent shielding effect taking place. Generally, Ti and Ti alloys exhibit not only high corrosion resistance but good biocompatibility as well. Many researches focus on Ti and Ti-alloys potential for bio-implant applications. Via adding Ta and Nb, beta stable elements, the Young’s modulus of Ti-alloys can decrease close to nature bone. Besides, Ta and Nb are considered as bio-friendly elements which exhibit no cytotoxicity. In this study, compared with other Ti-Ta-Nb alloys, Ti-30Ta-10Nb owns lower Young’s modulus but lower corrosion resistance. Nevertheless, no obvious pitting reaction occurs under the potential of 2 V. Also, according to Gibson and Ashby equation, the Young’s modulus of Ti-30Ta-Nb alloys with porosity about 60% can as low as nature bones and the strength of Ti-30Ta-Nb alloys can be higher than nature bone. Consequently, Ti-30Ta-Nb alloys demonstrate high potential for bio-implant applications.
    Advisory Committee
  • Lin, Che-Hsin - chair
  • Pan, Cheng-Tang - co-chair
  • Sheng-Rui Jian - co-chair
  • Chau,Chih-Yeh - co-chair
  • J. C. Huang - advisor
  • Files
  • etd-0325118-180935.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2018-04-25

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