TiB/sub 2/-Cu interpenetrating phase composites produced by spark-plasma sintering

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 fin...

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Published in7th Korea-Russia International Symposium on Science and Technology, Proceedings KORUS 2003. (IEEE Cat. No.03EX737) Vol. 1; pp. 47 - 50 vol.1
Main Authors Dudina, D.V., Lomovsky, O.I., Korchagin, M.A., Young-Soon Kwon
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Copper
Current
Microstructure
Plasma temperature
Powders
Scanning electron microscopy
Skeleton
Sparks
Titanium
Transmission electron microscopy
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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.
AbstractList 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.
Author Lomovsky, O.I.
Dudina, D.V.
Young-Soon Kwon
Korchagin, M.A.
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Snippet Interpenetrating phase composites of TiB/sub 2/-Cu system were produced via spark-plasma sintering (SPS) of nanocomposite powders. Under simultaneous action of...
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StartPage 47
SubjectTerms Copper
Current
Microstructure
Plasma temperature
Powders
Scanning electron microscopy
Skeleton
Sparks
Titanium
Transmission electron microscopy
Title TiB/sub 2/-Cu interpenetrating phase composites produced by spark-plasma sintering
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