Effect of Shear Stress on Sintering
Editor(s)
Green, David J. and Halloran, John and Johnson, David W. and Klein, Lisa
Abstract
The effect of small uniaxial stresses on the sintering of CdO powder compacts was studied using a loading dilatometer. Compacts of two different green densities were sintered at 1123 K and subjected to stresses between 0 and 0.25 MPa. Densification and creep occur simultaneously, and the effects of these two processes can be separated. between relative densities of 0.5 and 0.9, the dependence of the uniaxial creep rate on density can be described in terms of a stress intensification factor which depends exponentially on the porosity but is independent of the grain size. Comparison of the densification and creep rates permits definition of the sintering stress, which is found to decrease with increasing density, and verification of the Zener relation. the stress and grain size dependence of the creep rate, and the grain size dependence of the densification rate, support grain-boundary diffusion as the rate-controlling step in both processes.
Recommended Citation
M. N. Rahaman et al., "Effect of Shear Stress on Sintering," Journal of the American Ceramic Society, Wiley-Blackwell, Jan 1986.
The definitive version is available at https://doi.org/10.1111/j.1151-2916.1986.tb04693.x
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
0002-7820; 1551-2916
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1986 Wiley-Blackwell, All rights reserved.
Publication Date
01 Jan 1986
