A novel use of constrained sintering to determine the viscous Poisson's ratio of densifying materials

Aravind Mohanram, Sang Ho Lee, Gary L. Messing, David J. Green

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

This paper describes a novel technique, based on the concept of pressureless constrained sintering and the viscous analogy, for determining the viscous Poisson's ratio of sintering materials. The method involves measuring the sintering rate of a free-sintered specimen, and a specimen constrained by two non-sintering layers. Representative data for a low temperature co-fired ceramic (LTCC) material are reported. The viscous Poisson's ratio varied from 0.25 at ∼74% density to about 0.45 at ∼93%, which agrees well with model predictions. The method applies only during the intermediate stage of densification, because the material is viscous during this period of sintering.

Original languageEnglish (US)
Pages (from-to)2413-2418
Number of pages6
JournalActa Materialia
Volume53
Issue number8
DOIs
StatePublished - May 1 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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