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将DSC技术与助熔剂(B2O3)处理技术相结合, 实现并准确测量了Ge熔体的过冷现象. 利用该方法, 实验得到Ge熔体的最大过冷度为190 K. 在实验冷却速率范围内(5 ~ 40 K/min), 冷却速度越大, 过冷度越大. 在冷却速率一定的情况下, 所达到的过冷度随熔体过热度的增大而增大, 并逐步趋向于常数. 研究了过冷Ge熔体的凝固现象, 分析了Ge熔体的非等温结晶过程, 冷却速率越大, 则试样完全结晶所需时间越短.
The DSC technology and flux (B2O3) treatment technology were combined to achieve and accurately measure the overcooling of Ge melt.Using this method, the maximum undercooling of Ge melt was found to be 190 K. In the experimental cooling rate range (5 ~ 40 K / min), the greater the cooling rate, the greater the degree of undercooling.When the cooling rate is constant, the degree of undercooling increases with the increase of the degree of superheat and gradually increases In the constant, the solidification phenomenon of the undercooled Ge melt was studied, and the non-isothermal crystallization process of the Ge melt was analyzed. The larger the cooling rate, the shorter the time required for complete crystallization of the sample.