Modeling of Pressureless Constant Heating Rate Sintering of Ceramic Matrix Composites
Abstract
A viscoelastic finite-element model is developed for analyzing the pressureless constant-heating-rate sintering of particulate-or whisker-reinforced ceramic-matrix composites. The sintering potential is assumed to be a function of heating rate, temperature and relative density and is obtained from experimental data on the densification of an identical unconstrained (unreinforced) matrix sample. The reinforcement is modelled as a spherical or ellipsoidal unsinterable inclusion and the matrix as a compressible viscoelastic material. The results show that inclusions result in reduced sinterability and cause a heterogeneous density distribution, the heterogeneity of density, mechanical properties and residual stresses being affected by the shape of the inclusions. The initial homogeneity (or lack of it) of the green compact has been also shown to affect the final density. © 1995.
Recommended Citation
L. R. Dharani et al., "Modeling of Pressureless Constant Heating Rate Sintering of Ceramic Matrix Composites," Journal of Materials Processing Technology, Elsevier, Jan 1995.
The definitive version is available at https://doi.org/10.1016/0924-0136(94)01740-R
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0924-0136
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1995 Elsevier, All rights reserved.
Publication Date
01 Jan 1995
