[3D01-04] Corrosion Chemistry and FP Behavior 1

[3D04] Detection of small mass transfer in liquid metals by quartz crystal microbalance

*Reo Iizuka¹, Masatoshi Kondo² (1. Tokyo Institute of Technology, School of Engineering, Mechanical Engineering, Nuclear Engineering, Kondo Laboratory, 2. Tokyo Institute of Technology, Institute of Innovative Research, Laboratory for Advanced Nuclear Energy)

Keywords:liquid metal, quartz crystal microbalance, mass transfer, corrosion

Liquid lithium (Li) is promising fluid as tritium breeder material for fusion reactors and target material of A-FNS. Liquid Li reveals excellent chemical compatibility with structural materials. It is difficult to evaluate its small mass change in liquid Li by conventional ways of corrosion tests. Quartz crystal microbalance (QCM) can detect the small mass change. However, the research hasn’t been conducted in liquid metals at high temperature. The purpose of the present study is to investigate a small mass transfer by the QCM in liquid Li. In the experiment, Ni coated quartz crystal was exposed to liquid Li at 200 °C for 20 minutes. The mass change was detected by QCM. The mass loss corresponded to 1.2×10^-2 g/m².