摘要
通过对液态Sn的粘度的系统测量和分析,借助DTA-TG综合热分析方法,研究了金属熔体Sn的粘度随温度变化的规律和熔体微观结构的变化。结果表明,Sn熔体的粘度随温度的变化呈明显的不连续性,根据粘度的变化可以将熔体状态分为高温区、中温区和低温区,各温区间存在粘度突变温度点。在突变温度点处,金属熔体Sn可能发生了微观结构的变化。
The rule of temperature dependence of the viscosity and the transition in the microstructure have been studied by systematic measurements of the viscosity of molten Sn and DTA-TG analysis. The results show that the change of viscosity with temperature is discontinuous distinctly. According to the change of viscosity, the melt can be dividedinto three stages: high temperature region, mid-temperature region and low temperature region. From one region to another, there is an abrupt viscosity change dot. At these dots, the microstructure of molten Sn maybe change.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2004年第4期663-666,共4页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金项目(50371047)山东省自然科学基金项目(Y2001G02)
关键词
液态Sn
粘度
变化规律
微观结构变化
<Keyword>Molten Sn
Viscosity
Rule of the transition
Transition in the microstructure
