Pass - off DC pulse current primary role is to generate discharge plasma

It is a use pass - off direct current DC pulse electric current sintering pressure sintering method. Pass - off DC pulse current primary role is to generate discharge plasma discharge shock pressure, Joule heating and electric field diffusion. SPS sintering pulse current through the powder particles. The SPS sintering process, the electrode through the instant when the pulse current of DC discharge  polycrystalline diamond , the individual particles within the sintered body's own Joule heat is generated uniformly and to activate the particle surface. Synthesis and self-heating and  synthetic diamond  sintering method similar to, SPS within the effective use of the self-heating effect of the powder which is sintered. SPS sintering process can be viewed as a particle discharge, a conductive heat and pressure  abrasive grinding  result. In addition to heat and pressure to promote the sintering of these two factors, the SPS technology, the particles of the active discharge can produce local temperature, local melting of the surface may be the surface material peeling; temperature plasma sputtering and impact of the discharge of the powder clear particle surface impurities and adsorbed gas.