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Role of plasma temperature and residence time in stagnation plasma synthesis of c-BN nanopowders

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TitleInfo
Title
Role of plasma temperature and residence time in stagnation plasma synthesis of c-BN nanopowders
Name (type = personal)
NamePart (type = family)
Doyle
NamePart (type = given)
Jonathan M.
NamePart (type = date)
1984-
DisplayForm
Jonathan Doyle
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Tse
NamePart (type = given)
Stephen D
DisplayForm
Stephen D Tse
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
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NamePart (type = family)
Guo
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Zhixiong
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Zhixiong Guo
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Shan
NamePart (type = given)
Jerry
DisplayForm
Jerry Shan
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2013
DateOther (qualifier = exact); (type = degree)
2013-01
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
The synthesis of cubic boron nitride (c-BN) nanoparticles is examined experimentally by introducing borane ammonia precursor into a thermal plasma oriented in a stagnation point geometry, where nanoparticles are formed in the flow field upon reaching a cold substrate. The quasi-one dimensional flow field allows for correlating the plasma temperature and residence time to the final particle phase, morphology, size, and purity. Constant temperature and residence time cases are studied to assess the parameter’s affect on the resulting particle characteristics. The as-synthesized nanoparticles are characterized by high-resolution transmission electron microscopy (HRTEM) and x-ray diffraction (XRD). Cubic structured particles are synthesized at plasma temperatures of 3000-8000K and precursor decomposition times ≥0.030s. The highest purity samples are produced at a plasma temperature and residence time of 6500K and 0.075s, respectively. Samples with lower c-BN content are observed with higher percentages of hexagonal and amorphous phases. The particle morphology shifts from spherical agglomerates to faceted shapes as c-BN purity increases. Also, particle size undergoes an increase in nominal size. The resulting phase and purity is proposed to be governed by growth mechanisms that result in high-energy particle-particle interactions where the energy transferred is sufficient for atomic re-alignment into a denser phase.
Subject (authority = RUETD)
Topic
Mechanical and Aerospace Engineering
Subject (authority = ETD-LCSH)
Topic
Boron nitride
Subject (authority = ETD-LCSH)
Topic
Inductively coupled plasma spectrometry
Subject (authority = ETD-LCSH)
Topic
Nanostructures
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Identifier
ETD_4474
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000067760
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
viii, 72 p. : ill.
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Jonathan M Doyle
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T35B015R
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Doyle
GivenName
Jonathan
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2013-01-04 09:38:34
AssociatedEntity
Name
Jonathan Doyle
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical

RULTechMD (ID = TECHNICAL1)
ContentModel
ETD
OperatingSystem (VERSION = 5.1)
windows xp
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