Pressure sintering of powder pressing
billet heating and also the pressure can be obtained than atmospheric firing
crystalline particle more fine, more dense sintered body, people commonly used
heat pressure, sinter hip sintering preparation high performance stainless
steel. The results show that the pressure accelerates the flow and particle
rearrangement of the liquid phase, the greater the pressure, the greater the
densification rate, and the close to full densification of the stainless steel
after hot and so on.
Microwave sintering, which is a kind of
fast sintering technology, which is used to realize the densification of the
sintered body by sintering temperature and sintering temperature by using the
dielectric loss of the material in the microwave electromagnetic field. In
sintering process, microwave sintering can quickly jumped over the surface
diffusion stage, the grain to not grow up to complete densification and rapid
cooling, so it for grains in sintering process control of growing up is a kind
of effective method.
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