A schematic representation of the d

图3和图4报告了CS期间发生的不同现象的示意图，用于等静压和单轴压力辅助烧结。在阶段I期间，对液体介质施加压力会导致颗粒等静压缩（无论压力是通过单轴还是等规压力施加的）。在第一阶段中，发生了四种主要现象：（i）材料部分溶解在液体中；（ii）发生了奥斯特瓦尔德熟化（导致平均粒径增加）；（iii）可能发生了重结晶现象（导致（从液体中形成新晶体或新相），以及（iv）样品开始干燥。UCS和ICC的特征在于干燥过程完全不同。在前者中，干燥发生在整个第一阶段，通过冲头和模具之间的间隙（间隙）发生蒸发。相反，在ICC情况下，干燥仅在样品之后开始<br>已从等静压机上取下纸，因此在StageI期间根本不会发生干燥。从压机中取出后，样品在环境条件下或在环境室中干燥（液体在样品表面蒸发）。

A schematic representation of the different phenomena taking place during CS is reported in Figures 3 and 4 for isostatic and uniaxial pressure-assisted sintering.During Stage I, the application of pressure to the liquid medium results in an isostatic compression of the particles (regardless of whether the pressure is applied with a uniaxial or an isotactic press). During Stage I four main phenomena take place: (i) the material is partially dissolved in the liquid, (ii) Ostwald ripening takes place (leading to an increase of the average particle size),(iii) recrystallisation phenomena might occur (leading to the formation of new crystals or new phases from the liquid), and (iv) the sample starts drying. UCS and ICC are characterised by substantially different drying processes. In the former, drying takes place during the whole of Stage I, with evaporation occurring through the gap (clearance) between the punches and the die. Conversely, in the case of ICC drying starts only after the sample <br>has been removed from the isostatic press, so that drying does not occur at all during StageI. After being removed from the press, the sample is dried in ambient conditions or in an environmental chamber (the liquid evaporates at the sample surface).

图3和图4为等静压和单轴压力辅助烧结过程中发生的不同现象的示意图。在第一阶段，对液体介质施加压力会导致颗粒的等静压压缩（无论压力是单轴还是单轴施加等规压力）。在第一阶段，发生了四种主要现象：（I）材料部分溶解在液体中，（ii）奥斯特瓦尔德熟化发生（导致平均粒径增大），（iii）可能发生再结晶现象（导致液体形成新晶体或新相），（iv）样品开始干燥。UCS和ICC的特点是干燥过程大不相同。在前者中，干燥发生在整个第一阶段，蒸发发生在冲头和模具之间的间隙（间隙）。相反，在ICC的情况下，只有在样品之后才开始干燥<br>已从均衡压力中移除，因此在阶段期间根本不会发生干燥。从压力机中取出后，样品在环境条件下或在环境室中干燥（液体在样品表面蒸发）。