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The fracture toughness ( K IC ) of amalgam
Author(s) -
LLOYD C. H.,
ADAMSON M.
Publication year - 1985
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1985.tb00621.x
Subject(s) - amalgam (chemistry) , fracture toughness , materials science , fracture (geology) , composite material , chemistry , electrode
Summary The fracture toughness ( K IC ) has been measured (at 1 week) for a selection of sixteen amalgam products. This included low copper (i.e. Cu<6%) and high copper (both single component and admixed) products in milled and spherical powder forms. The results have shown that the fracture toughness decreases progressively as the copper content increases. The admixed high copper products possess superior fracture toughness to those containing a single component powder. These results have been attributed to differences in the microstructures produced by changes in composition and form in which the copper addition is made.