NDLI: Characteristics of Synthesized Alumina Nanoparticles in a High-Pressure Radio Frequency Thermal Plasma Reactor

Content Provider	IEEE Xplore Digital Library
Author	Ghorui, S. Sahasrabudhe, S. Dhamale, G. Kanhe, N. Mathe, V. Bhoraskar, S. Das, A.
Copyright Year	1973
Abstract	Nanophase alumina is synthesized in an atmospheric pressure radio frequency (RF) plasma reactor through melting, evaporation, and vapor phase nucleation technique. A specially designed high-pressure RF plasma reactor fitted with an indigenously built RF plasma torch converts commercially available micrometer size alumina chunks into spherical nanophase alumina in a single step under ambient quenching conditions without use of any additional quenching gas. Obtained powder contains mixed phases of α and δ -alumina as revealed by X-ray diffraction studies. Transmission Electron Microscopy analyses exhibit very small particle size (peak at 15 nm), narrow size distribution (half width ~ 24 nm), zero agglomeration, and good crystallinity. Obtained particle characteristics together with the high purity owing to inherent electrode-less feature of the RF discharge are suitable for important technological applications including fabrication of high-power ceramic laser gain media like Y₃Al₅O₁₂ (YAG) from composites of Al₂O₃ and Y₂O₃. Characteristics of the synthesized alumina are compared with that of nanoalumina synthesized in atmospheric arcs.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	759
Ending Page	766
Page Count	8
File Size	574539
File Format	PDF
ISSN	00933813
Volume Number	42
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Powders Electron tubes Nanoparticles Plasma temperature Cooling plasma sources Atmospheric-pressure plasmas plasma devices plasma materials processing
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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