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Precious Metal Powders and Preparations

3 bytes removed, 15:21, 10 December 2013
8.1 Precious Metal Powders
Fig. 81: Different shapes of silver powders a) spherical b) rounded crystal applomerates
different properties as shown in <xr id="tab:DifferentTypesofSilverPowders" /> 8.1 and 2.12. Atomizing from a melt results in a powder with high tap density composed of spherical particles. Using electrolytic deposition from a silver salt solution creates randomly shaped dentritic to crystalline particle structures. Chemical processes can result in rather fine particles with a large specific surface area. Fig. 8.1 shows typical SEM photo-graphs of atomized silver powder in spherical shapes (a) and a cementation powder composed of rounded crystal agglomerates (b).