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DTSTART:19700329T020000
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UID:ude20170406130000
CLASS:PUBLIC
SUMMARY:Synthesis and Processing of Nanostructured Cubic Boron Nitride and Its Composites
DTSTART;TZID=Europe/Berlin:20170406T130000
DTEND;TZID=Europe/Berlin:20170406T000000
DTSTAMP:20170406T130000Z
LOCATION;ENCODING=QUOTED-PRINTABLE:Campus Campus Duisburg : Seminarraum 2.42
CONTACT:Prof.  Stephen D. Tse (CENIDE)
DESCRIPTION:Prof.  Stephen D. Tse (CENIDE)
Synthesis and Processing of Nanostructured Cubic Boron Nitride and Its Composites
Plasma methods offer a variety of advantages to nanomaterials synthesis.  The work here demonstrates nanopowder synthesis using inductively-coupled plasma to decompose precursor, which are then quenched to produce a variety of boron nitride (BN)-phase nanoparticles.  Cubic BN (c-BN) powders can be generated through direct deposition onto a chilled substrate. Changing residence time can yield short-range ordered amorphous BN structures in the form of ~20nm diameter nanospheres (nano-onions). Finally, when introducing a rapid-quenching counter-flow gas against the plasma jet, high aspect ratio nanotubes are synthesized.  The benefits of these morphologies are also evident in high-pressure/high-temperature consolidation experiments, where nanoparticle phases can offer a favorable conversion route to super-hard c-BN while maintaining nanocrystallinity.
Thursday, 6. April 2017
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