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

表2 常见合金元素及其碳化物与Te发生化学反应的ΔG汇总[26] (kJ·mol-1)

Table 2 Summary of ΔG of chemical reactions between common alloying elements, their carbides, and Te[26]

Element and phase Reaction ΔG Cr 3Te + 2Cr = Cr2Te3 -294.60 Cr carbide 10.5Te + Cr7C3 = 3.5Cr2Te3 + 3C -840.76 34.5Te + Cr23C6 = 11.5Cr2Te3 + 6C -2997.65 Ni 3Te + 2Ni = Ni2Te3 -112.96 Ni carbide 4.5Te + Ni3C = 1.5Ni2Te3 + C -222.74 Fe 2Te + Fe = FeTe2 -33.45 Mo 2Te + Mo = MoTe2 -57.17 4Te + 3Mo = Mo3Te4 -123.65 Mo carbide 2Te + MoC = MoTe2 + C -27.38 4Te + Mo2C = 2MoTe2 + C -59.68 6Te + Mo3C2 = 3MoTe2 + 2C -96.22