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说明过冷度、临界过冷度、动态过冷度概念的区别

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实际结晶温度与理论结晶温度之间的温度差,称为过冷度。过冷液体中,能够形成等于临界晶核半径的晶胚时的过冷度,称为临界过冷度。晶核长大时,要求液/固相界面前沿液体中有一定的过冷,晶体才能长大,这种过冷称为动态过冷度。

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