316계 스테인리스강과 소듐 냉각재와의 양립성 연구

• Published in: 대한금속·재료학회지, 48(5) pp. 410 - 416
• Main Authors: 김준환, 김종만, 차재은, 김성호, 이찬복
• Format: Journal Article
• Language: Korean
• Published: 대한금속·재료학회 01.05.2010
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241

Studies were carried out to establish the technology for sodium-clad compatibility and to analyze the compatibility behavior of the Sodium-cooled Fast Reactor (SFR) cladding material under a flowing sodium environment. The natural circulation facility caused by the thermal convection of the liquid sodium was constructed and the 316-series stainless steels were exposed at 650℃ liquid sodium for 1458 hours. The weight change and related microstructural change were analyzed. The results showed that the quasi-dynamic facility represented by the natural convection exhibited similar results compared to the conventional dynamic facility. Selective leaching and local depletion of the chromium, re-distribution of the carbide, and the decarburization process took place in the 316-series stainless steel under a flowing sodium environment. This process decreased as the sodium flowed along the channel, which was caused by the change in the dissolved oxygen and carbon activity in the liquid sodium. KCI Citation Count: 4