2016年7月13日星期三

Pressure sintering and microwave sintering


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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