Reaction processing for the development of ultra-high temperature ceramics

"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, page iv.

Name thesis:degree_name

Ph. D. in Ceramic Engineering

Grantor

University of Missouri--Rolla

Year dc:date.available

2016

Author dc:creator

• Chamberlain, Adam L.

• Ceramic Materials

Repository record dc:identifier

https://scholarsmine.mst.edu/doctoral_dissertations/1679

OAI identifier oai:identifier

oai:scholarsmine.mst.edu:doctoral_dissertations-2681