Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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TiB2-Cu Interpenetrating Phase Composites Produced by Spark-plasma Sintering

  • Kwon, Young-Soon (Research Center for Machine Parts and Materials Processing, University of Ulsan) ;
  • V. Dudina, Dina (Institute of Solid State Chemistry and Mechanochemistry SB RAS) ;
  • I. Lomovsky, Oleg (Institute of Solid State Chemistry and Mechanochemistry SB RAS) ;
  • A. Korchagin, Michail (Institute of Solid State Chemistry and Mechanochemistry SB RAS) ;
  • Kim, Ji-Soon (Research Center for Machine Parts and Materials Processing, University of Ulsan)
  • Published : 2003.06.01
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Abstract

Interpenetrating phase composites of $TiB_2$-Cu system were produced via Spark-Plasma Sintering (SPS) oi nanocomposite powders. Under simultaneous action of pressure, temperature and electric current titanium diboride nanoparticles distributed in copper matrix move, agglomerate and form a fine-grained skeleton. Increasing SPS-temperature and he]ding time promote densification due to local melting of copper matrix When copper melting is avoided the compacts contain 17-20% porosity but titanium diboride skeleton is still formed representing the feature of SPS . High degree of densification and formation of titanium diboride network result in increased hardness of high-temperature SPS-compacts.

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