溶融アルミニウムのナトリウム中での変形・破砕挙動 : 瞬時接触界面温度がナトリウムの沸点以下の場合 : 熱工学 , 内燃機関 , 動力など

抄録

Basic experiments using molten aluminum and sodium have been conducted to investigate the possibility of fragmentation of molten metals for instantaneous contact interface temperatures sufficiently below the boiling point of sodium (881°C) . Aluminum was heated to the temperature from 898°C to 1073°C in a crucible by using an electric heater and dropped into a sodium pool at the temperature of around 275°C. Recovered aluminum fragments were sieved to measure particle size. The degree of fragmentation increases with higher initial temperatures of molten aluminum. The fragmentation process is closely related with the formation of pot-like shape from aluminum drop. Even though the instantaneous contact interface temperature is sufficiently lower than the boiling point of sodium, an efficient fragmentation is caused by a high pressure produced rapidly due to the thermal interaction between the molten aluminum and the sodium entrapped into the molten aluminum.