Doctoral Dissertations

Title

Reaction processing for the development of ultra-high temperature ceramics

Abstract

"Research into ultra high temperature materials has increased in recent years due to the need for material systems that can withstand the temperatures associated with hypersonic flight applications. ZrB₂ and HfB₂ are among the candidates for these extreme conditions. These diborides have melting temperatures that exceed 3000⁰C, the potential for strength retention at elevated temperatures, and moderate oxidation resistance when compared to high temperature carbides. However, diborides have often been reported to exhibit low strength and significant strength degradation by 1500⁰C; therefore, limiting their use at high temperatures...This research focused on processing zirconium diboride (ZrB₂) ceramics that exhibit improved mechanical performance and reduced impurity content. Three processing methods have been used to produce dense ZrB₂ ceramics; conventional hot pressing, reactive hot pressing, and pressureless sintering"--Abstract, leaf iv.

Advisor(s)

Hilmas, Greg
Fahrenholtz, William

Committee Member(s)

Van Aken, David C.
Ellerby, Donald T.
Smith, Jeffrey D.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Ceramic Engineering

Sponsor(s)

United States. Department of Education

Publisher

University of Missouri--Rolla

Publication Date

Summer 2006

Journal article titles appearing in thesis/dissertation

  • High strength ZrB₂-ceramics
  • Pressureless sintering of zirconium diboride
  • Low temperature densification of zirconium diboride ceramics by reactive hot pressing
  • Reactive hot pressing of zirconium diboride

Pagination

xiii, 162 leaves

Note about bibliography

Includes bibliographical references.

Rights

© 2006 Adam Lee Chamberlain, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Library of Congress Subject Headings

Borides
High temperatures
Silicon carbide
Zirconium

Thesis Number

T 8984

Print OCLC #

123087648

Link to Catalog Record

Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b5842104~S5

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