Actions for Characterization and processing of sintered products from Nano-crystalline powders generated by the RTDS method [electronic resource].

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Characterization and processing of sintered products from Nano-crystalline powders generated by the RTDS method [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
17 pages : digital, PDF file
Additional Creators
Pacific Northwest Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Large quantities of nano-crystalline zirconium oxide/oxyhydroxide and nickel-chromium oxide/oxyhydroxide particles agglomerated and sieved into +320/−200 mesh powders have been produced using the rapid thermal decomposition of solutes (RTDS) method. Green compacts (approximately 40% theoretical density) prepared by cold-pressing the RTDS powders at pressures of 140-280-MPa were heated to form dense (86--91% theoretical density) ZrO₂ or Ni₅₀Cr₅₀components. Dimensional changes in the compacts during heating were used to extract information about the sintering kinetics in these systems. At 800C, grain-boundary diffusion coupled with some surface diffusion are the dominant mechanisms contributing toward the observed densification in the ZrO₂ system. The mechanism-independent activation energy for densification was determined to be 81-kJ/mol for the ZrO₂ system and 56-kj/mol for the NiCr system.
Report Numbers
E 1.99:pnl-sa--22235
E 1.99: conf-9308160--2
conf-9308160--2
pnl-sa--22235
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Note
Published through SciTech Connect.
08/01/1993.
"pnl-sa--22235"
" conf-9308160--2"
"DE94004765"
24. annual meeting of the Fine Particle Society,Chicago, IL (United States),24-28 Aug 1993.
Buehler, M.F.; Linehan, J.C.; Darab, J.G.; Matson, D.W.
Funding Information
AC06-76RL01830
View MARC record | catkey: 14452946