A compaction process in which (1) a metal powder is placed in a mold made of high-melting-point sheet steel, (2) the assembly is pressurized in a chamber containing argon or another inert gas for an extended time under high temperatures, and (3) the assembly is removed; this process yields parts of very high quality but is costly and time-consuming, so it is reserved mainly for expensive parts such as for the final densification of cutting tools and tool steels and for superalloy components for the aircraft and aerospace industries and in military, medical, and chemical applications
A) Powder Compaction
B) Hot Pressing
C) Cold Pressing
D) Spark Plasma Sintering