Presentation Information
[2I12]Impact of lithium-lead and gamma-ray irradiation on corrosion of ceramic-iron joint coatings
*Hnin Lai Lai Wai1, Kento Shirota1, Do Duy Khiem 1, Norizuki Ryosuke 1, Tanaka Teruya 2, Noto Hiroyuki 2, Nagasaka Takuya 2, Chikada Takumi1 (1. Shizuoka Univ., 2. NIFS)
Keywords:
Coating,Li-Pb,Corrosion,Irradiation
Understanding synergistic effects on corrosion of structural and functional materials by liquid Li-Pb under an irradiation environment are of great importance in fusion reactor liquid blanket systems. Our previous studies revealed the impacts of heavy-ion irradiation on Li-Pb compatibility when applied to plate samples. In this research, the strategic vision focuses on the Li-Pb corrosion behaviors of ceramic-iron joint coating for tubular samples under gamma-ray irradiation. Ceramic coatings were fabricated on SS316L tubes by metal-organic decomposition and then were joined with iron tube using a hot-isostatic pressing machine at 25 MPa and 823 K. Li-Pb exposure tests for were carried out at 823 K for 100 h and 200 h under the estimated absorbed dose 27 kGy of gamma-ray irradiation and followed by 400 h and 300 h without irradiation, respectively. SEM images reveal that ceramic coatings are notably higher resistance. Additionally, there is no intrusion of Li and Pb through the coating after 100 h irradiation.