2020 Annual Meeting

Presentation information

Print

Oral presentation

VI. Fusion Energy Engineering » 601-2 Fusion Reactor Material Science (Reactor and Blanket Materials, Irradiation Behavior)/601-1 Plasma Technology, including Inertial Confinement Fusion

[1L10-13] Liquid Metal/Solid Breeder

Mon. Mar 16, 2020 3:50 PM - 4:55 PM Room L (Lecture Bildg. S 2F S-22)

Chair:Yuji Hatano(Univ. of Toyama)

4:05 PM - 4:20 PM

[1L11] Chemical compatibility of liquid tin (Sn)

(1)Corrosion characteristics of steels

*Masatoshi Kondo1, Masafumi Akiyoshi2, Naoko Oono3, Teruya Tanaka4 (1. Tokyo Institute of Technology, 2. OSAKA PREFECTURE UNIVERSIT, 3. Hokkaido University, 4. National Institute for Fusion Science)

Keywords:Liquid divertor, Material compatibility, Al bearing steel, electron irradiation

Liquid tin (Sn) is a promising coolant for liquid divertor concepts. However, its material compatibility with structural materials is an important issue. The purpose of the present study is to investigate corrosion resistance of RAFM steel, austenitic steel, and Al bearing steels in liquid Sn. The corrosion tests were performed at various conditions such as a static condition and in-situ electron beam irradiation condition. The results indicated that the corrosion of the RAFM steel was caused by an alloying reaction between the steel compositions and liquid Sn. The alloying corrosion was mitigated on the Al bearing steels, since the Al2O3 layer formed on their surface functioned as a corrosion barrier. It was also found that the alloying corrosion was promoted under an electron irradiation.