A method for the preparation of silver - tin - master alloys for zahnaerztliche amalgams

摘要

A silver-tin-copper master alloy powder useful as a dental filling when amalgamated with mercury and having improved properties for that utility can be obtained by the steps of: (a) pulverizing an alloy containing silver, tin and copper into a first spherical powder by high pressure water, inert gas or similar pulverization (b) drying and forming said first powder into a coherent shaped article; (c) sintering the shaped article at an elevated temperature; and (d) pulverizing the sintered shaped article by machining into a master alloy powder.