Stoichiometric and X-ray diffraction analysis on the gamma 2 leads to eta' transformation in a dispersant phase silver amalgam.

Phase composition of an amalgam prepared form a two-particle alloy was determined over a 2-year period by X-ray diffraction. The gamma 2-content decreased from 3.6% to 0.3% and eta' increased from 3.9% to 10.0%. These alterations in phase content agreed with stoichiometric calculations performed on the basis of the solid state reaction: gamma 2 + Ag/Cu leads to eta' + gamma 1.