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Title page for etd-0909109-025412


URN etd-0909109-025412 Statistics This thesis had been viewed 3026 times. Download 1313 times.
Author Ting-Yao Huang
Author's Email Address No Public.
Department Materials Engineering
Year 2008 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 100
Title Formation of Al-based Bulk Amorphous Alloys by Powder Metallurgy Route
Keyword
  • polarization measurements
  • Vacuum hot pressing
  • Al-based amorphous alloy
  • Mechanical alloying
  • Mechanical alloying
  • Al-based amorphous alloy
  • Vacuum hot pressing
  • polarization measurements
  • Abstract This study examined the amorphization behavior of Al-based alloy powders synthesized by mechanical alloying technique and consolidated by vacuum hot pressing for Al60Ti35Ni2Si3, Al60Ti35Ni2B3, Al60Ti35Ni2Cu3, (Al75Cu17Mg8)97Ni3 and (Al75Cu19Mg6)97Ni3 alloys. Surface oxidation of powders in milling and consolidation processes led to larger amount of porosity and bad bulk forming ability. In addition, the hardness of the bulk amorphous alloys is 336.2 Hv for Al60Ti35Ni2Si3, 315.8 Hv for Al60Ti35Ni2B3, 309.8 Hv for Al60Ti35Ni2Cu3, 321.4 Hv for (Al75Cu17Mg8)97Ni3 and 317.6 Hv for (Al75Cu19Mg6)97Ni3, respectively. Furthermore, (Al75Cu17Mg8)97Ni3 and (Al75Cu19Mg6)97Ni3 bulk amorphous alloys were found to exhibit a better corrosion resistance evaluated by potentiodynamic polarization measurements in 3.5wt% NaCl solution.
    Advisor Committee
  • Chia-Jung Hu - advisor
  • Files indicate access worldwide
    Date of Defense 2009-07-30 Date of Submission 2009-09-09


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