中文摘要：

通过DSC测试确定了Sb和Sb-Bi合金实现过冷的能力,并且发现放热量随着Sb含量的增加而增加。电阻率的测量结果显示,在冷却过程中,Sb及Sb-Bi合金的电阻率都经历了几次突变,其中Sb及Sb90Bi10处于过冷态时电阻率出现回升现象,并且冷却过程中的温度突变与电阻率突变同时发生。经分析认为,放热量的不同是由于金属释放潜热的能力不同造成的;电阻率出现突变与Sb的斜方六面体结构中的Peierls畸变及原子团尺寸变化有关;温度突变与电阻率突变相对应说明凝固过程中的结构转变对电阻率有一定的影响。

英文摘要：

The undercooling ability of Sb and SbBi alloys was measured by DSC, and the exotherm is in creased with the increase of Sb content. Through the resistivity measurement, it is found that the resis tivity of Sb and SbBi alloys undergoes several sudden change, and the upturn of resistivity of Sb and Sb90Bi10 at undercooled state can be observed with the decrease of temperature. Meanwhile, the abrupt transformation of resistivity corresponds to the sudden change of temperature during the cooling process in Sb and SbBi alloys. It is believed that the difference of exotherm is attributed to the difference of la tent heat release ability＇ and the sudden change of resistivity with temperature is related to the peierls distortion in hexahedral structure of Sb and the change of atomic cluster size. In addition, the corre sponding relation of temperature and resistivity indicates that the structure transition in solidification process has the obvious effect on the resistivity.