Properties of Ag-Cu-Pd dispersed phase amalgams: microstructures.

A 62% Ag-28% Cu-10% Pd lathe-cut alloy was successfully blended with conventional lathe-cut and spherical amalgam alloy. The resulting alloy showed little gamma 2 after one wk at 37 degrees C and a phase structure resembling commercial amalgam. In addition, the Cu3Pd phase present in the dispersant appears to participate in the amalgam reaction and, as a result, Pd may be found in the reaction zone around the dispersants in gamma 1 and/or Cu6Sn5 phases.