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Title page for etd-0821107-132844


URN etd-0821107-132844 Statistics This thesis had been viewed 3944 times. Download 1437 times.
Author Yen-Chih Peng
Author's Email Address No Public.
Department Materials Engineering
Year 2006 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 166
Title Synthesis of Cu-Ti-based Amorphous Powders and Investigation of Consolidation
by Vacuum Hot Pressing
Keyword
  • Vacuum hot pressing
  • Glass transition
  • Supercooled liquid region
  • Cu-based amorphous alloy
  • Mechanical alloying
  • Mechanical alloying
  • Cu-based amorphous alloy
  • Supercooled liquid region
  • Glass transition
  • Vacuum hot pressing
  • Abstract This study examined the amorphization behavior of Cu-based alloy powders synthesized by mechanical alloying technique and investigation of consolidation by vacuum hot pressing. Several amorphous powders were found to exhibit a wide supercooled liquid region before crystallization.The temperature interval of the supercooled liquid region (△Tx) are 41.13 K, 80.72 K, 79.44 K, 91.14 K, 92.85 K and 95.55 K for Cu50-xTi40Fe10Snx(x=1, 3, 5, 8, 10, 12 at%), 40.46 K and 47.08 K for Cu50-xTi40Fe10(SnB3)x(x=10, 12 at%). The addition of Sn and B significantly improved the glass forming ability (GFA) of the Cu-Ti-Fe amorphous alloy. Cu40Ti40Fe10Sn10 amorphous alloy that were consolidated at temperature range of 360℃ to 400℃ are fully dense (99%) and maintain the chemical homogeneous glassy structure.
    Advisor Committee
  • Chia-Jung Hu - advisor
  • Files indicate in-campus access immediately and off-campus access at one year
    Date of Defense 2007-07-26 Date of Submission 2007-08-21


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