Atlas Pressed Metals explains advantage of copper infiltration in Powder Metallurgy components
Pm-review - Atlas Pressed Metals, a producer of Powder Metallurgy parts based in DuBois, Pennsylvania, USA, has published a guide explaining the purpose of copper infiltration in PM components. Components are copper infiltrated for a number of reasons, explains the company; some basic desired results are improvements to tensile strength, hardness, impact properties and ductility.
Copper-infiltrated components will also have a higher density, the company notes. Other reasons copper infiltration may be of benefit are for wear improvement or to block air/gas flow through an otherwise porous component at temperatures at which the use of a resin would not be practical.