【作者】 李昊翔； 于天达； 朱紫豪； 郑伟； 银华强； 杜斌；

【Author】 LI Haoxiang;YU Tianda;ZHU Zihao;ZHENG Wei;YIN Huaqiang;DU Bin;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China;Institute of Nuclear and New Energy Technology,Tsinghua University;

【机构】 中国核动力研究设计院核反应堆技术全国重点实验室； 清华大学核能与新能源技术研究院；

【摘要】 高温气冷堆蒸汽发生器合金材料的氧化腐蚀研究是该领域的核心课题。本研究在He-ppmO₂混合气氛条件下建立了合金氧化行为预测模型,并运用配气式高温合金腐蚀系统实验数据进行验证。通过结合氧化动力学理论分析与Incoloy 800H合金腐蚀实验,从理论计算与实验验证两方面证实了模型的有效性。研究证实:该模型可准确预测不同氧浓度及氧化时间下高温合金的氧化规律;通过高氧浓度短时实验等效模拟低氧浓度长时工况的技术路径,显著缩短了实验周期。值得注意的是,在极低氧浓度环境中,因微气候反应机制的存在,模型对Incoloy 800H合金的预测精度可能出现偏差。本研究提出的预测模型及实验验证结果为高温堆合金氧化腐蚀研究提供了理论依据和技术支撑。更多还原

【Abstract】 The study of oxidation and corrosion of alloy materials in high-temperature gas-cooled reactor steam generators is a core topic in the field.This research established a predictive model for alloy oxidation behavior under He-ppmO₂ mixed gas conditions and validated it using experimental data from a high-temperature alloy corrosion system with gas distribution.By combining theoretical analysis of oxidation kinetics with corrosion experiments on Incoloy 800 H alloy,the effectiveness of the model was confirmed from both theoretical calculations and experimental validation.The study confirmed:（1） The model can accurately predict the oxidation behavior of high-temperature alloys under different oxygen concentrations and oxidation times;（2） The technical approach of simulating long-term low-oxygen concentration conditions through short-term high-oxygen concentration experiments significantly reduced the experimental cycle.It is noteworthy that in extremely low oxygen concentration environments,the presence of microclimate reaction mechanisms may introduce prediction errors for Incoloy 800 H alloy.The predictive model and experimental validation results proposed in this study provide theoretical basis and technical support for the research on oxidation and corrosion of alloys in high-temperature reactors.更多还原