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Quasi-equilibrium sintering of particle clusters containing Bernal holes

  • Fumihiro Wakai , Yutaka Shinoda and Takashi Akatsu
Published/Copyright: May 31, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 97 Issue 5

Abstract

The transformation of spherical particle assemblies into dense materials by sintering is an idealized micromechanical model for studying the densification. The equilibrium configurations of particle clusters containing canonical Bernal holes, which are typical structural units in random packing of spheres, were calculated by using the Surface Evolver program. The quasi-equilibrium sintering of particle clusters, in which pores shrink keeping their equilibrium shapes, were analyzed as a response to the sintering stress and the macroscopic viscosity. Both sintering stress and macroscopic viscosity were determined as a function of the pore volume, the dihedral angle, and the pore coordination number. The densification curves in sintering simulation agreed with the predicted shrinkage rate.

Keywords: Sintering; Simulation; Micromechanical modeling; Sintering stress
* Correspondence address: Prof. Fumihiro Wakai, Tokyo Institute of Technology, Materials and Structures Laboratory, R3-23, 4259 Nagatsuta, Midori, Yokohama 226-8503 Japan, Tel.: +81459245361, Fax: +81459245390. E-mail:

Dedicated to Professor Dr. Fritz Aldinger on the occasion of his 65th birthday

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Received: 2005-10-4
Accepted: 2006-2-15
Published Online: 2013-05-31
Published in Print: 2006-05-01

© 2006, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.101289
Keywords for this article
Sintering; Simulation; Micromechanical modeling; Sintering stress

Articles in the same Issue

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  2. Contents
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  4. Editorial
  5. Basic
  6. Three-dimensional printing of TiAl3/Al2O3 composites
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  8. Solid-State 17O NMR studies on Yttria-stabilized zirconia
  9. Twinning in ultrathin silicon nanowires
  10. Re-optimization of the Mg–Sb system under topological constraints
  11. Mg-rich phase equilibria of Mg–Mn–Zn alloys analyzed by computational thermochemistry
  12. The In–Pt–Sb phase diagram
  13. Thermodynamic evaluation of the Al–Cr–C system
  14. Thermodynamic description of the Ni–Si–Ti ternary system
  15. Enthalpies of formation measurements and thermodynamic description of the Ag–Cu–Zn system
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  24. Thermal evolution of free volumes and of crystallization in amorphous Si–B–C–N ceramics
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