용융염원자로 발전용 초내열 Fe계 강의 고온 부식특성 평가

• 영문명: Evaluation of High-Temperature Corrosion Characteristics of Super heat-resistant Fe-based steels for Molten Salt Reactor
• 발행기관: 한국환경에너지공학회
• 저자명: 김민지
• 간행물 정보: 『환경에너지공학』제18권 제2호, 27~35쪽, 전체 9쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2023.12.31

국문 초록

Molten salt reactors(MSR) use (chloride, fluoride)-containing molten fluoride salts as primary coolant, at low pressure. Molten salt reactors(MSR) are high security, significantly enhanced efficiency, passive safety features, and reduction of nuclear waste, however (chloride, fluoride)-containing condition generally leads to serious corrosion damage on structural steel components. In this study, the corrosion behavior of a Fe-based steel is studied in a high temperature under (chloride, fluoride)-containing molten fluoride salts environment of approximately 500~700 ℃ for up to 200 h. After corrosion were analyzed the corrosion rate, microstructure and corrosion mechanism by scanning electron microscopy (SEM), energy Dispersive Spectrometer(EDS), X-ray diffraction (XRD). Hot corrosion test results that corrosion rates increased progressively as the corrosion temperature and time increased and the corrosion resistance of the alloy significantly enhances with the high amount of Cr and Ni. During the corrosion of the Cr, Ni-containing steels, two different oxide layers of (Fe, Cr, O)-mixed layers are sequentially formed as a layered structure and the T91 steel corroded more faster than AL-6XN steel and forming thick layer.

목차

1. 서 론

2. 실험 방법

3. 실험 결과

4. 결 론

감사의 글

References

키워드

용융염 원자로 부식 탄소 중립 용융염부식 Molten Salt Reactor Corrosion Carbon Neutrality Hot corrosion