熔盐堆用镍基合金失效机理与改性策略研究进展

王优, 陈向阳, 王煦嘉, 汤春桃, 沈朝, 曾小勤

Progress in Failure Mechanisms and Modification Strategies of Nickel-Based Alloys for Molten Salt Reactors

WANG You, CHEN Xiangyang, WANG Xujia, TANG Chuntao, SHEN Zhao, ZENG Xiaoqin

图2 Ni80Cr20、800H和GH3535合金在熔融FLiNaK盐中腐蚀后的表面和截面形貌及元素分布[14,15]

Fig.2 Top surface and cross-sectional SEM images and corresponding elemental analyses of Ni80Cr20, 800H, and GH3535 alloys after corrosion in molten FLiNaK salt (a1-a3) top surface SEM image (a1) and corresponding EDS elemental mappings of Ni (a2) and Cr (a3) in Ni80Cr20 alloy after 4.5 h corrosion at 600 oC[14] (b1-b3) local cross-sectional SEM image (b1) and corresponding EDS elemental mappings of Ni (b2) and Cr (b3) in Ni80Cr20 alloy after 4.5 h corrosion at 600 oC[14] (c1-c3) cross-sectional SEM image (c1) and EPMA images showing the elemental distributions of Cr (c2) and Ni (c3) in 800H alloy after 300 h corrosion at 850 oC[15] (d1-d3) cross-sectional SEM image (d1) and EPMA images showing the elemental distributions of Cr (d2) and Ni (d3) in GH3535 alloy after 300 h corrosion at 850 oC[15]