Characterization of silicon nitride particles synthesized in an atmospheric-pressure convection-stabilized arc

Journal Article · Wed Mar 01 04:00:00 EST 1989 · Plasma Chemistry and Plasma Processing; (USA)

DOI:https://doi.org/10.1007/BF01015827· OSTI ID:7246915

Chang, Yl; Kong, P; Pfender, E ^[1]

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1. Univ. of Minnesota, Minneapolis (USA)

Silicon nitride powders were synthesized in an atmospheric-pressure convection-stabilized arc using silicon and ammonia as reactants. The morphology and particle size distributions of the silicon nitride particles were characterized by SEM, TEM, and electron diffraction analyses. The silicon nitride particles collected in the plasma reactor were formed by either gas-condensed phase reactions or chemical vapor reactions. The morphologies of the particles formed by gas-condensed phase reactions consisted of {beta}-Si{sub 3}N{sub 4} prisms, {alpha}-Si{sub 3}N{sub 4} matte, {alpha}-Si{sub 3}N{sub 4} needles, and spaghetti-like whiskers. For the homogeneously nucleated particles, the morphologies included dendrites, needles, platelets, and amorphous particles. Most of the particles formed were aggregates with particle size distributions ranging from 500 to 1,500 {angstrom} depending on the location of injection of the reactants.

• DOE Contract Number: FG02-85ER13433
• OSTI ID: 7246915
• Journal Information: Plasma Chemistry and Plasma Processing; (USA), Journal Name: Plasma Chemistry and Plasma Processing; (USA) Vol. 9:1; ISSN PCPPD; ISSN 0272-4324
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
AMMONIA
AMORPHOUS STATE
ATMOSPHERIC PRESSURE
CERAMICS
COATINGS
COHERENT SCATTERING
CONVECTION
CRYSTAL STRUCTURE
CURRENTS
DEPOSITION
DIFFRACTION
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
ENERGY TRANSFER
HEAT TRANSFER
HOT PLASMA
HYDRIDES
HYDROGEN COMPOUNDS
IONIZATION
MASS TRANSFER
MICROSCOPY
NITRIDES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEATION
PARTICLE SIZE
PLASMA
PLASMA ARC SPRAYING
PNICTIDES
SCANNING ELECTRON MICROSCOPY
SCATTERING
SEMIMETALS
SILICON
SILICON COMPOUNDS
SILICON NITRIDES
SIZE
SPRAY COATING
SPRAYED COATINGS
STABILIZATION
SURFACE COATING
TRANSMISSION ELECTRON MICROSCOPY
VERY HIGH TEMPERATURE