Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The Influence of Ceramic Interphases on the Creep Behavior of Silicon Nitride



Sheldon M. Wiederhorn


In this paper we discuss the role played by the intergranular phases in the creep of silicon nitride, which is completely controlled by the amount and effective viscosity of the intergranular phases. After briefly reviewing the structure and creep behavior of silicon nitride, we discuss two theories developed to rationalize known facts on the creep behavior of this material. One of the theories is based on grain boundary sliding, the other on cavity formation and the flow of the sintering aid away from the cavitation site. A detailed evaluation of each model with regard to transport properties of the sintering aid supports the cavitation model as the explanation for high temperature creep of silicon nitride.
Ceramic Interfaces Workshop


cavitation, creep, density, granular materials, silicon nitride


Wiederhorn, S. (2008), The Influence of Ceramic Interphases on the Creep Behavior of Silicon Nitride, Ceramic Interfaces Workshop (Accessed May 22, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created October 16, 2008