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The Resource Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King
Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King
Resource Information
The item Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri Libraries.This item is available to borrow from all library branches.
Resource Information
The item Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri Libraries.
This item is available to borrow from all library branches.
- Summary
- "The microstructure, hardness, fracture toughness, Young's modulus, strength and Weibull modulus of silicon carbide-titanium diboride (SiC-TiB2) ceramics were studied. First, SiC-TiB2 ceramics with 15 vol.% TiB2 particles were processed using two green processing methods, spray drying (ST) and ball milling (SiC-15TiB2). In addition, SiC-TiB2 ceramics with TiB2 contents ranging from 0 to 100 vol.% were produced to determine a TiB2 content that produced the best combination of mechanical properties. From spray drying, segregation of the TiB2 particles in ST led to a granule-like microstructure and spontaneous microcracking in the final ceramic. In ceramics containing 20 and 40 vol.% TiB2, the TiB2 particle sizes were also large enough to allow for spontaneous microcracking. Spontaneous microcracking decreased the hardness from 28 GPa for SiC to 24 GPa for SiC-TiB2 with TiB2 contents of 80 vol.% or higher. In contrast, fracture toughness increased from 2 MPa·m1/2 for SiC to 6̃ MPa·m[superscript 1/2] for SiC containing 40 vol.% TiB2 or more. Using a two-parameter Weibull analysis, SiC with 20 vol.% TiB2 had the highest average strength (522 MPa), followed by SiC-15TiB2 (500 MPa), then SiC with 40 vol.% TiB2 (420 MPa), and ST (380 MPa). While microcracking in ST lowered the strength, hardness, and elastic modulus compared to SiC-15TiB2, the granule-like microstructure combined with microcracking, narrowed the flaw size distribution of ST and boosted the Weibull modulus of ST to 21 compared to 12 for SiC-15TiB2, which had a uniform distribution of TiB2 particles. The Weibull moduli of SiC containing 20 and 40 vol.% TiB2 was also boosted to 17, compared to 12 for a TiB2 content of 15 vol.%. To maximize each property, TiB2 particle sizes should be kept just below the spontaneous microcracking threshold to prevent spontaneous flaw formation"--Abstract, page iv
- Language
- eng
- Extent
- 1 online resource (xi, 107 pages)
- Note
-
- Vita
- This thesis contains two papers for publication
- Label
- Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites
- Title
- Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites
- Statement of responsibility
- by Derek Scott King
- Language
- eng
- Summary
- "The microstructure, hardness, fracture toughness, Young's modulus, strength and Weibull modulus of silicon carbide-titanium diboride (SiC-TiB2) ceramics were studied. First, SiC-TiB2 ceramics with 15 vol.% TiB2 particles were processed using two green processing methods, spray drying (ST) and ball milling (SiC-15TiB2). In addition, SiC-TiB2 ceramics with TiB2 contents ranging from 0 to 100 vol.% were produced to determine a TiB2 content that produced the best combination of mechanical properties. From spray drying, segregation of the TiB2 particles in ST led to a granule-like microstructure and spontaneous microcracking in the final ceramic. In ceramics containing 20 and 40 vol.% TiB2, the TiB2 particle sizes were also large enough to allow for spontaneous microcracking. Spontaneous microcracking decreased the hardness from 28 GPa for SiC to 24 GPa for SiC-TiB2 with TiB2 contents of 80 vol.% or higher. In contrast, fracture toughness increased from 2 MPa·m1/2 for SiC to 6̃ MPa·m[superscript 1/2] for SiC containing 40 vol.% TiB2 or more. Using a two-parameter Weibull analysis, SiC with 20 vol.% TiB2 had the highest average strength (522 MPa), followed by SiC-15TiB2 (500 MPa), then SiC with 40 vol.% TiB2 (420 MPa), and ST (380 MPa). While microcracking in ST lowered the strength, hardness, and elastic modulus compared to SiC-15TiB2, the granule-like microstructure combined with microcracking, narrowed the flaw size distribution of ST and boosted the Weibull modulus of ST to 21 compared to 12 for SiC-15TiB2, which had a uniform distribution of TiB2 particles. The Weibull moduli of SiC containing 20 and 40 vol.% TiB2 was also boosted to 17, compared to 12 for a TiB2 content of 15 vol.%. To maximize each property, TiB2 particle sizes should be kept just below the spontaneous microcracking threshold to prevent spontaneous flaw formation"--Abstract, page iv
- Cataloging source
- UMR
- http://library.link/vocab/creatorDate
- 1988-
- http://library.link/vocab/creatorName
- King, Derek Scott
- Degree
- M.S.
- Dissertation year
- 2012.
- Funding information
- Funded by Saint-Gobain Advanced Ceramics and the Army Research Laboratory through Cooperative Agreement Number
- Granting institution
- Missouri University of Science and Technology
- Illustrations
- illustrations
- Index
- no index present
- Literary form
- non fiction
- Nature of contents
-
- dictionaries
- bibliography
- theses
- http://library.link/vocab/subjectName
-
- Ceramic materials
- Silicon carbide
- Composite materials
- Ceramic materials
- Composite materials
- Silicon carbide
- Label
- Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King
- Note
-
- Vita
- This thesis contains two papers for publication
- Bibliography note
- Includes bibliographical references (pages 100-106)
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier.
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent.
- Control code
- 908260225
- Extent
- 1 online resource (xi, 107 pages)
- Form of item
- online
- Media category
- computer
- Media MARC source
- rdamedia.
- Media type code
-
- c
- Other physical details
- illustrations.
- Specific material designation
- remote
- System control number
- (OCoLC)908260225
- Label
- Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King
- Note
-
- Vita
- This thesis contains two papers for publication
- Bibliography note
- Includes bibliographical references (pages 100-106)
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier.
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent.
- Control code
- 908260225
- Extent
- 1 online resource (xi, 107 pages)
- Form of item
- online
- Media category
- computer
- Media MARC source
- rdamedia.
- Media type code
-
- c
- Other physical details
- illustrations.
- Specific material designation
- remote
- System control number
- (OCoLC)908260225
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<div class="citation" vocab="http://schema.org/"><i class="fa fa-external-link-square fa-fw"></i> Data from <span resource="http://link.library.missouri.edu/portal/Microstructure-and-mechanical-properties-of/w4Pveo706tg/" typeof="Book http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.library.missouri.edu/portal/Microstructure-and-mechanical-properties-of/w4Pveo706tg/">Microstructure and mechanical properties of silicon carbide-titanium diboride ceramic composites, by Derek Scott King</a></span> - <span property="potentialAction" typeOf="OrganizeAction"><span property="agent" typeof="LibrarySystem http://library.link/vocab/LibrarySystem" resource="http://link.library.missouri.edu/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.library.missouri.edu/">University of Missouri Libraries</a></span></span></span></span></div>