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Effect of Anions on Hot‐Pressing of MgO
Author(s) -
LEIPOLD M. H.,
KAPADIA C. M.
Publication year - 1973
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.1151-2916.1973.tb12456.x
Subject(s) - impurity , hot pressing , pressing , materials science , ion , lattice (music) , analytical chemistry (journal) , inorganic chemistry , chemistry , composite material , organic chemistry , physics , acoustics
Anion impurities (S 2− , Cl − , F − and OH − ) are shown to be deleterious to the densification of MgO by hot‐pressing. The magnitude of the effect decreases in the order in which the anions are listed and is reduced as temperature increases. The effect is suggested to result from gas pressures within the compact and die cavity, and the magnitude of interference with densification is related to both the vapor pressure of the impurity and its rejection from the lattice (insolubility).