[1L10-14] Fusion Reactor Materials 1

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[1L13] Development of additively manufactured FeCrAl alloys for liquid metal based blanket system of laser inertial confinement fusion reactors

*Kotaro Sato¹, Yoshiki Kitamura¹, Masahiro Onoi², Masatoshi Kondo¹ (1. Science Tokyo, 2. MTC)

Keywords:

Additive manufacturing,FeCrAl alloys,Liquid metal,Protective oxide layer

Liquid metals are candidate coolants for fusion reactors, but liquid metals have the issue of corroding materials. FeCrAl alloys form a protective α-Al₂O₃ layer on the surface to improve corrosion resistance. However, Al-containing materials have bad weldability and processability. Additive Manufactured (AM) technology enables to fabricate complex shapes without welding procedure. To promote the uniform formation of protective Al₂O₃ layer, a free Ni FeCrAl alloys containing 6wt% Al was formed with AM. The purpose of this study was to investigate the characteristics of AM FeCrAl alloys oxide layer. The oxide layer performed through pre-oxidation was investigated for its stability and protective behavior.