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Microstructure effect on dihedral angle in liquid-phase sintering

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Abstract

Granular systems with a wetting liquid phase produce an attractive normal force between the solid grains and a radial force that promotes bonding via neck growth. The classic force balance in the neck region relates the energy ratio of the grain boundary and solid-liquid interfaces to the dihedral angle φ as 2γ SL cos (φ/2)=γ SS . This relation is only applicable when the neck diameter is much larger than the neck thickness. This article presents a detailed analysis of two grains during liquidphase sintering, refining the linkage between the underlying surface energies and the microstructure and apparent effect of grain size on the neck size.

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Authors and Affiliations

  1. the Prometal Division, Extrude Hone Corporation, 15642, Irwin, PA

    Jianxin Liu (Senior Materials Engineer)

  2. the Center for Innovative Sintered Products, The Pennsylvania State University, 16802-6809, University Park, PA

    Randall M. German (Brush Chair Professor in Materials and Director)

Authors
  1. Jianxin Liu
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  2. Randall M. German
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Liu, J., German, R.M. Microstructure effect on dihedral angle in liquid-phase sintering. Metall Mater Trans A 32, 165–169 (2001). https://doi.org/10.1007/s11661-001-0112-z

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  • DOI: https://doi.org/10.1007/s11661-001-0112-z

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