过热

在物理学中，过热（又称沸腾延迟，英語：Superheating）是指液体被加热到沸点以上的温度而不沸腾的现象。此為所謂的準穩態，由外部或內部影響所引起的沸騰可能隨時發生。Debenedetti, P.G.Metastable Liquids: Concepts and Principles; Princeton University Press: Princeton, NJ, USA, 1996.在干净的容器中加热同相物质会出现过热现象，同时要避免成核现象的出现。需注意的是加热时欲出现过热现象，需要避免搅动液体。

 参见 
 過熱蒸汽（Superheated steam）
 過熱水
 高压釜
 暴沸
 临界点 (热力学)
 过冷
 过饱和

 参考资料 

 外部链接 
 Video of superheated water in a microwave explosively flash boiling, why it happens, and why it's dangerous. 
 A series of superheated water with oil film experiments done in the microwave by Louis A. Bloomfield, physics professor at the University of Virginia. Experiment #13 proceeds with surprising violence.
 Video of superheated water in a pot. 

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