Effects of additives on the subcooling behavior of Al2(SO4)3⋅18H2O phase transition

Abstract An experimental device for studying subcooling behavior was fabricated, and the subcooling curves of Al 2 (SO 4 ) 3 ⋅18H 2 O were drawn. The effects of nucleating agent, interface modifier agent, and deionized water addition were studied, and the mechanism was discussed. The results showed that the subcooling temperature of Al 2 (SO 4 ) 3 ⋅18H 2 O decreased to 3.1 °C with 1.5% nano-TiO 2 (20 nm), 2% gelatin, and 10% deionized water.