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Pore Evolution During Glow Discharge Sintering of Alumina
Author(s) -
PAGE RICHARD A.,
SPOONER STEPHEN,
SANDERSON WAYNE B.,
JOHNSON D. LYNN
Publication year - 1988
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.1151-2916.1988.tb05803.x
Subject(s) - sintering , materials science , glow discharge , neutron scattering , hydrogen , cathode , porosity , scattering , small angle neutron scattering , composite material , analytical chemistry (journal) , mineralogy , optics , chemistry , plasma , physics , organic chemistry , chromatography , quantum mechanics
A series of experiments have been performed to demonstrate the applicability of small‐angle neutron scattering to the study of pore evolution during sintering. Samples of α‐Al 2 O 3 which had been zone sintered in a hydrogen hollow cathode glow discharge to densities exceeding 94% of theoretical were employed in these preliminary measurements. The neutron scattering results indicate that densification during the final stages of glow discharge sintering occurs primarily through a reduction in the number of pores present with only a small change in the average pore size.