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→Precious Metal Powders
The measured densities of powders – both, the apparent density and the tap density – are low compared to the wrought metals because of the gaps between the particles. They vary in a wide range between 0.5 and 6 g/cm3 depending on the morphology of the particles and their tendency to agglomeration. Precious metal powders can be compacted by pressing and then sintered; a certain amount of porosity is however always retained.
<figure id="fig:Different shapes of silver powders"> Fig. 8.1: Different shapes of silver powders a) spherical b) rounded crystal applomerates
[[File:Different shapes of silver powders.jpg|right|thumb|Different shapes of silver powders a) spherical b) rounded crystal applomerates]]
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