PPS - PULSE PLASMA SINTERING

our website: www.sintering.pl ========================================================= Pulse Plasma Sintering (PPS) is a new sintering technique involving the action of an electric field. This method utilizes pulsed high electric current discharges to heat the powder subjected to pressing. The PPS process has a very high thermal efficiency, since the powder is heated directly by the pulse arc discharges. Its main feature is the high energy (of the order of 600MW) delivered in a short pulse, an energy which is considerably greater than that achieved in the other techniques. The main advantages of the sintering enhanced by strong electric-current impulses are: the short process duration (about several minutes) and energy-savings. The PPS sintering technique can be used for producing dense sinters from a wide variety of materials such as eg: metals (wolfram, titanium, iron and its alloys), ceramics (Al2O3, TiN, TiB2), composites (WC - Co, WCu, Cu-diamond, NiAl - TiC, NiAl - Al2O3), functionally graded materials (FGMs). Using the PPS technique it is possible to obtain sinters of nano-crystalline powders during a few minutes, the sinters having the density close to the theoretical value. This method can also be used for conducting reactive processes with the participation of the SHS reaction (Self Propagating High Temperature Synthesis), which permit producing NiAl from nickel and aluminum powders, and WC - Co from wolfram, graphite and cobalt powders ...
Video Rating: 5 / 5