
1. 国能陈家港发电有限公司,江苏,盐城,224624
2. 南京师范大学 能源与机械工程学院,江苏,南京,210023
Online First:12 August 2025,
Published:2025
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尤通通,刘海峰,崔体磊,汪道元,徐俊豪,祁晶. S-CO2循环中合金氧化膜形成及失效研究进展动力工程学报, 2025, 45(8): 1227-1233 https://doi. DOI: 10.19805/j.cnki.jcspe.2025.240416.
org/10.19805/j.cnki.jcspe.2025.240416
超临界二氧化碳(S-CO
2
)循环具有效率高、结构紧凑、工质流程短等优点
能适应电网快速调峰、深度调峰的要求。然而
在实际应用中S-CO
2
循环的性能和稳定性在很大程度上依赖于高温合金材料的力学性能、耐腐蚀性和抗氧化性。首先
介绍了S-CO
2
循环高温换热器的材料选取
详细介绍了S-CO
2
环境中铁素体-马氏体合金和奥氏体不锈钢的氧化膜形貌特征
分析了氧化膜失效实验研究方法;最后
介绍了氧化膜失效预测模型。结果表明:S-H
2
O循环的材料选择标准也可能适用于类似温度和压力下的S-CO
2
循环系统;合金换热器在S-CO
2
环境下会发生氧化-碳化反应;氧化膜/合金界面出现的碳化现象会加剧氧化膜失效。
Supercritical carbon dioxide (S-CO
2
) cycle has advantages as high efficiency
compact structure
and short working fluid flow path
and can meet the requirements of rapid peak regulation and deep grid peak regulation in power grid. However
in practical applications
the performance and stability of the S-CO
2
cycle largely depend on the mechanical properties
corrosion resistance and oxidation resistance of superalloy materials. Firstly
the material selection of high-temperature heat exchanger for the S-CO
2
cycle was introduced. Secondly
the morphology characteristics of the oxide films of ferritic-martensitic alloys and austenitic stainless steels in the S-CO
2
environment
were introduced
and the experimental research methods for oxide film failure were analyzed. Finally
the prediction model for the failure of oxide film was introduced. Results show that the material selection criteria for the S-H
2
O cycle may also be applicable to the S-CO
2
cycle system under similar temperatures and pressures. Alloy heat exchangers in S-CO
2
environments will undergo oxidation-carbonization reactions. The carbonization phenomenon occurring at the oxide film/alloy interface will aggravate the failure of the oxide film.
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