Goals and Contemporary Position of Powder Metallurgy in Products Manufacturing

Abstract

This chapter is an introduction to the book on powder metallurgy (PM). It presents the basis of the selection of powder metallurgy technologies for manufacturing of products, including such applied in medicine and dentistry, and the state of the art concerning the general characteristic of powder metallurgy. The materials and products manufactured with the classical powder metallurgy methods are generally described. The last section presents the general contents of the book based on the above general information.

High Speed Steel with Iron Addition Materials Sintered by Spark Plasma Sintering

“…Since technological and economic considerations are equally important, the infiltration of a porous skeleton made from HSS with liquid copper has proved to be a sufficient technique by which a fully dense material can be produced at a low cost [4,[8][9][10]. Infiltration is an operation in which the pores of PM parts are filled with a molten metal or alloy by means of capillary forces [11,12] or external pressure-pressure infiltration (under pressure exerted from the outside) [13,14].…”

Ultrafast Atomic Diffusion Paths in Fine-Grained Nickel Obtained by Spark Plasma Sintering

“…Powder metallurgy represents a growing industry where complex shapes of a large range of materials (pure metals and alloys) can be processed in a short time and with excellent production value [1][2][3] . It is highly used in different domains such as aerospace electronics, nuclear energy industry, and technologies for medical or dental use and especially in the automobile industry [4][5][6] . Different sintering techniques enable the fabrication of custom-made microstructures including ultrafine grained (UFG), bimodal or harmonic structures [7][8][9] .…”