Quenching 30 mm diameter hot metal into ionic liquids
3,250 views · Published 29 April 2016 · 2:11 · Indexed 17 October 2026
Channel: bhadeshia123 · 2016 · Education
Ionic liquids are being investigated for their ability to quench without causing distortion, because the Leidenfrost effect (where a vapour blanket separates the liquid from the metal and hence reduces the efficacy of the quench) is almost absent. Note that the diameter of the aluminium rods is 30 mm. There are two videos, the first showing a hot aluminium bar being plunged into water, and the second into an ionic liquid. Both videos are replayed in 60 times slow motion, so the length in real time is one second. Videos courtesy of Martin Beck, University of Rostok, Germany. http://www.metals.uni-rostock.de http://www.msm.cam.ac.uk/phase-trans/2007/HT/heat_transfer.html
