Variations in sintering stress and viscosity with mixing ratio of metal/ceramic powders

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Distortions or cracking in metal/ceramic graded powder compacts during sintering may be caused by the variation in densification behavior of the layers with different mixing ratios. To clarify the constitutive response of the heterogeneous powder compacts, a micromechanics model for sintering is proposed. The sintering stress as well as the viscosity of the powder mixtures is expressed by using Eshelby's equivalent inclusion method and Mori-Tanaka's mean-field theory. The variation in sintering behavior with metal/ceramic mixing ratio computed by the proposed model is compared with the experimental data for Ni/Al2O3 system. The present model can reproduce the decrease in sintering rate of the powder mixtures, which remarkably appears in the Ni/Al2O3 powder compacts with small amount of Al 2O3.

Original languageEnglish
Title of host publicationAdvances in Sintering Science and Technology - A Collection of Papers Presented at the International Conference on Sintering
Pages161-170
Number of pages10
Publication statusPublished - Aug 13 2010
Externally publishedYes
EventAdvances in Sintering Science and Technology - International Conference on Sintering 2008 - La Jolla, CA, United States
Duration: Nov 16 2008Nov 20 2008

Publication series

NameCeramic Transactions
Volume209
ISSN (Print)1042-1122

Other

OtherAdvances in Sintering Science and Technology - International Conference on Sintering 2008
CountryUnited States
CityLa Jolla, CA
Period11/16/0811/20/08

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Shinagawa, K. (2010). Variations in sintering stress and viscosity with mixing ratio of metal/ceramic powders. In Advances in Sintering Science and Technology - A Collection of Papers Presented at the International Conference on Sintering (pp. 161-170). (Ceramic Transactions; Vol. 209).