LiCl-Li2O 용융염에서 초내열합금의 부식거동

• 영문명: Corrosion Behavior of Super-Heat-Resistant Alloys in LiCl-Li2O Molten Salt Atmosphere
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 김태경(Tae-Kyung Kim)
• 간행물 정보: 『산업기술연구논문지』산업기술연구논문지 제25권 2호, 33~40쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2020.06.30

영문 초록

In this research, the corrosion behavior of super-heat-resistant alloy was studied for developing a reactor vessel material for metal conversion of spent nuclear fuel via lithium molten salt electrolysis. The experimental results are summarized as follows: (1) The oxide formation during corrosion reaction was at the rate of diffusion of alloying elements with the thermodynamic stability according to the oxide formation, and initially formed Fe, Cr-oxide. As the corrosion progressed, Fe, Ni-rich oxide, and Ni-based spinel oxides emerged. (2) The corrosion rate of super-heat-resistant alloys follows the parabolic law for reaction time and linear law for the concentration of Li2O. (3) Al and Ti, which are oxygen-active elements, are useful for improving corrosion resistance; at Al and Ti contents of approximately 1.5% and 2.5% respectively, these alloying elements are the first to be oxidized through external diffusion to form oxides. This may also inhibit internal oxidation through formation of a layer on the oxide/base metal interface. Although Mo and Nb tended to be concentrated at the oxide/oxide interface, a clear improvement in corrosion resistance to internal oxidation could not be observed.

목차

Ⅰ. 서 론

Ⅱ. 실험방법

Ⅲ. 결과 및 고찰

Ⅳ. 결론

참고문헌

키워드

용융염 전해법 초내열합금 부식거동 내식성 산화리튬 Molten Salt Electrolysis Super Heat Resistant Alloys Corrosion Behavior Corrosion Resistance Li2O