Keywords: sodium hydroxide, solution, cooling rate, NaOH, temperature, cooling, water, silver ball,

　　The maximum cooling rate of 15% NaOH aqueous solution is about 2600 ℃/s (higher than brine), the corresponding temperature is about 560T, and the characteristic temperature is about 750 ℃, which is caused by the explosion and destruction of steam film after sodium hydroxide crystallization. It can also be seen that the cooling rate of sodium hydroxide aqueous solution of various concentrations below 300 ℃ is slower than that of water, so it is the 1 quenching medium with excellent cooling performance.

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