Pressureless Sintering of a Ceramic Matrix with Multiple Rigid Inclusions: Finite Element Model

Abstract

Interaction among the dispersed second phase of rigid inclusions in a ceramic matrix undergoing densification is investigated by a viscoelastic finite element method with a two-dimensional multiple-inclusion model. the interaction is negligible when the volume fraction of inclusions is low (<20%) and/or when the inclusions are uniformly distributed. the interaction becomes significant when the volume fraction of inclusions is high or the inclusions are agglomerated. the densification rates in the region between the inclusions are enhanced to some degree when the inclusions are closely packed. This enhancement will, however, cease when the inclusions get much closer, eventually coming in contact with each other. in general, the agglomeration or close packing of inclusions results in retardation in the overall densification of the sintering matrix.

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0002-7820

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1995 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 1995

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