한국분말재료학회지 (Journal of Powder Materials)

  • 제23권3호
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  • Pages.202-206
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  • 2016
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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A Study on Synthesis of Ni-Ti-B Alloy by Mechanical Alloying from Elemental Component Powder

  • Kim, Jung Geun (Defense Agency for Technology and Quality, Sacheon Center) ;
  • Park, Yong Ho (Department of Material Science and Engineering, Pusan National University)
  • 투고 : 2016.04.05
  • 심사 : 2016.06.02
  • 발행 : 2016.06.28
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초록

A Ni-Ti-B alloy powder prepared by mechanical alloying (MA) of individual Ni, Ti, and B components is examined with the aim of elucidating the phase transitions and crystallization during heat treatment. Ti and B atoms penetrating into the Ni lattice result in a Ni (Ti, B) solid solution and an amorphous phase. Differential thermal analysis (DTA) reveals peaks related to the decomposition of the metastable Ni (Ti, B) solid solution and the separation of equilibrium $Ni_3Ti$, $TiB_2$, and ${\tau}-Ni_20Ti_3B_6$ phases. The exothermal effects in the DTA curves move to lower temperatures with increasing milling time. The formation of a $TiB_2$ phase by annealing indicates that the mechanochemical reaction of the Ni-Ti-B alloy does not comply with the alloy composition in the ternary phase diagram, and Ti-B bonds are found to be more preferable than Ni-B bonds.

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참고문헌

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