Keywords and Phrases
"The first part of this dissertation was aimed at studying the densification of ZrB₂ ceramics by pressureless sintering techniques. Various processes have been applied to coat ZrB₂ powders with polymer precursors, which were used to produce C after charring. After sintering at 1900⁰C, relative density increased of ~70% for uncoated ZrB₂ to >99% for ZrB₂ coated with at least 1.0 wt% C. Thermodynamic analysis suggested that C reacted with and removed oxide impurities (ZrO₂ and B₂O₃) that were present on the ZrB₂ particle surfaces, which promoted densification by minimizing grain coarsening"--Abstract, page iv.
Miller, F. Scott, 1956-
Brow, Richard K.
Switzer, Jay A., 1950-
Materials Science and Engineering
Ph. D. in Ceramic Engineering
National Science Foundation (U.S.)
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Pressureless sintering of carbon-coated zirconium diboride powders
- Pressureless sintering of zirconium diboride using boron carbide and carbon additions
- Enhanced densification and mechanical properties of ZrB₂-SiC processed by a preceramic polymer coating route
- Influence of silicon carbide particle size on the microstructure and mechanical properties of zirconium diboride-silicon carbide ceramics
- Elevated temperature strength of hot pressed zirconium diboride ceramics
xiv, 180 pages
© 2008 Sumin Zhu, All rights reserved.
Dissertation - Open Access
Library of Congress Subject Headings
Ceramic materials -- Mechanical properties
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Zhu, Sumin, "Densification, microstructure, and mechanical properties of zirconium diboride based ultra-high temperature ceramics" (2008). Doctoral Dissertations. 1985.