摘要
本文对Pb44.5Bi55.5（LBE），Pb60Bi40,Pb70Bi30及Pb80Bi20合金和纯Pb在液相线以上一定温度范围内进行了黏度性质研究，结果显示，随温度升高五种熔体的黏度都呈现减小趋势。LBE，Pb60Bi40，Pb70Bi30和Pb80Bi20四种熔体在测试温度范围内黏度值都有突变，纯Pb黏度值在测试温度范围内没有明显变化，黏度的突变表明了熔体微观结构的转变。在623-923K温度范围内，Pb60Bi40黏度值明显高于其他比例的铅铋合金，温度在1023K以上时，相同温度下的铅铋合金黏度随铋含量的减小而增加。实验结果为先进核反应堆用亚共晶铅铋合金的成分选择提供了一定数据支持。
In this paper, viscosities of Pb44.5 Bi55.5 （LBE）, Pb60 Bi40, Pb70 gi30 , Pb80 Bi20 and Pb are studied in a certain temperature range above liquidus, the results show that the viscosities of five melts decrease with the increase of temperature. Excepting for pure Pb, anomalous changes in the viscosity valuesare found in LBE, PbG0 Bi40, Pb70 Bi30 and Pb80Bi20in the test temperature range, it is presumed that melts structure occurs at the anomalous point of the viscosity. In the temperature range of 623 - 923 K, viscosity value of Pb60 Bi40 is obviously higher than that of the other proportion of lead bismuth alloy, and it increases with the decrease of bismuth content at temperature above 1 023 K. The experimental results provide data support for the choice of lead-bismuth hypoeuteetic applied in advanced nuclear reactor.
出处
《核科学与工程》
CSCD
北大核心
2013年第4期414-418,共5页
Nuclear Science and Engineering
基金
中科院知识创新工程重要方向项目“ADS反应堆物理与技术”(095CF2R211)
中国科学院“未来先进核裂变能-ADS嬗变系统”先导专项子项目“铅铋材料与回路技术”(XDA03040200)
关键词
液态金属冷却剂
铅铋合金
黏度
liquid metal coolant
lead-bismuth alloy
viscosity
