Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Thermal Stability of Amorphous Ti-Cu-Ni-Sn Prepared by Mechanical Alloying

  • Oanha, N.T.H. (Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan) ;
  • Choi, P.P. (Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan) ;
  • Kim, J.S. (Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan) ;
  • Kim, J.C. (Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan) ;
  • Kwone, Y.S. (Research Center for Machine Parts and Materials Processing, School of Materials Science and Engineering, University of Ulsan)
  • Published : 2006.09.24
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Abstract

Ti-Cu-Ni-Sn quaternary amorphous alloys of $Ti_{50}Cu_{32}Ni_{15}Sn_3$, $Ti_{50}Cu_{25}Ni_{20}Sn_5$, and $Ti_{50}Cu_{23}Ni_{20}Sn_7$ composition were prepared by mechanical alloying in a planetary high-energy ball-mill (AGO-2). The amorphization of all three alloys was found to set in after milling at 300rpm speed for 2h. A complete amorphization was observed for $Ti_{50}Cu_{32}Ni_{15}Sn_3$ and $Ti_{50}Cu_{25}Ni_{20}Sn_5$ after 30h and 20h of milling, respectively. Differential scanning calorimetry analyses revealed that the thermal stability increased in the order of $Ti_{50}Cu_{32}Ni_{15}Sn_3$, $Ti_{50}Cu_{25}Ni_{20}Sn_5$, and $Ti_{50}Cu_{23}Ni_{20}Sn_7$.

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