High-Density Pressurelessly Sintered Zirconium Diboride/Silicon Carbide Composite Bodies and a Method for Producing the Same

Author

Shi C. Zhang, Missouri University of Science and TechnologyFollow
Greg Hilmas, Missouri University of Science and TechnologyFollow
William Fahrenholtz, Missouri University of Science and TechnologyFollow

Abstract

A method of sintering a ZrB₂-SiC composite body at ambient pressures, including blending a first predetermined amount of ZrB₂ powder with a second predetermined amount of SiC powder, wherein both powders are characterized by the presence of surface oxide impurities. Next the blended powders are mixed to yield a substantially homogeneous powder mixture and a portion of the substantially homogeneous powder mixture is formed into a green body. The body is fired to a first temperature, wherein substantially all surface oxide impurities are reduced and/or volatilized to substantially eliminate oxides from the green body, and the body is heated to a second temperature and sintered to yield a composite body of at least about 99 percent theoretical density and characterized by SiC whisker-like inclusions distributed substantially evenly in a ZrB₂ matrix.

Recommended Citation

S. C. Zhang et al., "High-Density Pressurelessly Sintered Zirconium Diboride/Silicon Carbide Composite Bodies and a Method for Producing the Same," U.S. Patents, Jan 2012.

Department(s)

Materials Science and Engineering

Patent Application Number

US12/201,704

Patent Number

US20090048087A1

Document Type

Patent

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2018 The Curators of the University of Missouri, All rights reserved.

Publication Date

17 Jan 2012