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Nonuniform Densification during Gas Pressure Sintering of an alpha‐Sialon Ceramic
Author(s) -
Cho SeongJai,
Yoon KyungJin
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02642.x
Subject(s) - sialon , sintering , materials science , ceramic , gas pressure , composite material , diffusion , mineralogy , thermodynamics , chemistry , geology , physics , petroleum engineering
Densification of α‐sialon ceramics during gas pressure intering was investigated experimentally. The densification did not occur uniformly throughout specimen compacts. Instead, it started at the surface and progressed into the interior of the compacts. The kinetics of this unique nonuniform densification was strongly influenced by the applied N 2 pressure. The nonuniform densification behavior was attributed to the slow diffusion‐out of N 2 gas entrapped in pores.