What are the characteristics of porous powder metallurgy materials?

     Porous is one of the important features of powder metallurgy materials. With this feature, (1) can make sweating materials. That is, the low-melting substance is impregnated in the pores of the ordinary powder metallurgy material, and when the high-temperature work is performed, the impregnated material melts and oozes, so that the material "sweating" to dissipate heat. This makes it possible to replace expensive heat-resistant alloys with ordinary materials and further increase the service temperature of heat-resistant parts. (2) Manufacturing filter materials. Used for filtration, filtrate and filtration. (3) Impregnating and reducing abrasives to produce oil- and oil-free lubricating bearings; impregnating spices to make fragrant handicrafts. (4) In some cases, iron is used instead of non-ferrous metals such as copper and lead. (5) Manufacturing materials such as vibration damping, noise reduction, and heat insulation. (6) Increasing the specific surface area of the material, and using it as a carrier for the substance (such as carrying a catalyst, etc.).https://www.supplyforever.com/