On October 8, the liquid metal lithium experimental circuit developed by the project team of the Institute of Nuclear Energy Safety Technology of the Hefei Institute of Material Science, Chinese Academy of Sciences has achieved 1500K ultra-high temperature and stable operation for 1000 hours.
During the development of the circuit, the project team conquered the structural stress coordination, immersion measurement and flow stability control of the device in an ultra-high temperature liquid lithium working environment. Currently, the circuit has developed a series of high temperature refractory alloys at 1400. The anti-corrosion performance research experiment in the flowing lithium environment of ~1500K temperature zone provides an important experimental platform for the study of the compatibility of ultra-high temperature liquid lithium and structural materials.
The Nuclear Energy Safety Project team has long been engaged in the design and development of small advanced nuclear energy systems using special liquid metals as cooling fluids. Liquid lithium or lithium alloys have the advantages of high operating temperature, good thermal conductivity and low density, and are high-power space reactors and futures. The main coolant material of the fusion reactor. The ultra-high temperature lithium experimental circuit was built and operated stably, which marked a new breakthrough in the key technology of liquid metal coolant in China's advanced nuclear energy system.
Figure 1 Ultra-high temperature liquid metal lithium experimental circuit
Figure 2 Corrosion morphology of typical materials in 1473K high temperature lithium
