Corrosion behavior and microstructural evolution of ASTM A182 Grade 92 steel in liquid sodium at 650 oC
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- Corrosion behavior and microstructural evolution of ASTM A182 Grade 92 steel in liquid sodium at 650 oC
- Kim, Ji Hyun; Shin, Sang Hun; Kim, Jun Hwan
- Issue Date
- PERGAMON-ELSEVIER SCIENCE LTD
- CORROSION SCIENCE, v.97, pp.172 - 182
- ASTM A182 Grade 92 steel was exposed to liquid sodium at 650°C to investigate the effect of oxidation on microstructural evolution. Comparisons were made to the same material exposed to argon gas at 650°C. In the sodium-exposed specimens, intergranular oxidation and chromium depletion were observed at the near-surface. With the argon-exposed specimen, however, this behavior at the surface was not observed. At the near-surface in specimens exposed to 650°C liquid sodium, it was mostly M23C6 carbide that was observed, whereas a M2(W,Mo) phase was predominant in the bulk steel matrix in specimens exposed to both 650°C sodium and argon.
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