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。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

• [http://www.phys.unsw.edu.au/~jw/superheating.html Video of superheated water in a microwave explosively flash boiling, why it happens, and why it's dangerous.]
• [https://web.archive.org/web/20080602171433/http://howthingswork.virginia.edu/movies/shw128k.rm 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.]
• [https://www.youtube.com/watch?v=pgUWQgJ1TbY Video of superheated water in a pot.]