Abstract

Pores play an important role in sintering densification. In this study, 3D microstructure reconstruction has been used to quantitatively evaluate pore evolution during sintering. Pore shape, distribution, and connectivity are displayed in 3D based on actual microstructure data and show drastic differences from the conventional description of pores. Pore volume fraction and pore number density are extracted from the 3D microstructure reconstruction and compared. Pore size distribution frequency with sintering time is obtained. New tortuosity concept is provided to properly represent pore shape changes during sintering.

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