Title :
TiB/sub 2/-Cu interpenetrating phase composites produced by spark-plasma sintering
Author :
Dudina, Dina V. ; Lomovsky, Oleg I. ; Korchagin, Michail A. ; Kwon, Young-Soon
Author_Institution :
Inst. of Solid State Chem. & Mechanochemistry, Siberian Russian Acad. of Sci., Novosibirsk, Russia
Abstract :
Interpenetrating phase composites of TiB/sub 2/-Cu system were produced via spark-plasma sintering (SPS) of nanocomposite powders. Under simultaneous action of pressure, temperature and electric current the titanium diboride nanoparticles distributed in copper matrix move, agglomerate and form a fine-grained skeleton. Increasing SPS-temperature and holding time promote densification due to local melting of copper matrix. When copper melting is avoided, the compacts contain 17-20% porosity but the titanium diboride skeleton is still formed representing the feature of SPS. High degree of densification and formation of titanium diboride network results in increased hardness of high-temperature SPS-compacts.
Keywords :
copper; densification; nanocomposites; powders; sintering; titanium; TiB/sub 2/Cu; copper matrix; densification; fine-grained skeleton; nanocomposite powders; phase composites; spark-plasma sintering; titanium diboride nanoparticles;
Conference_Titel :
Science and Technology, 2003. Proceedings KORUS 2003. The 7th Korea-Russia International Symposium on
Print_ISBN :
89-7868-617-6
