压水堆二回路碱化剂与材料的相容性研究进展  

Research Progress on Compatibility Between Alkalizing Agents and Materials in PWR Secondary Circuit

作　　者：冀跃飞 郝龙[1,2] 王俭秋 李庆华[4] 郑跃 于沛 柯伟 JI Yuefei;HAO Long;WANG Jianqiu;LI Qinghua;ZHENG Yue;YU Pei;KE Wei(Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Institute of Corrosion Science and Technology,Guangzhou 510700,China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100083,China)

机构地区：[1]中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,沈阳110016 [2]中国科学技术大学材料科学与工程学院,沈阳110016 [3]广东腐蚀科学与技术创新研究院,广州510700 [4]中国核电工程有限公司,北京100083

出　　处：《中国腐蚀与防护学报》2024年第2期267-277,共11页Journal of Chinese Society For Corrosion and Protection

基　　金：中核集团领创科研项目。

摘　　要：综述了国内外压水堆二回路碱化剂的应用情况及其与二回路结构材料相容性的研究进展。首先介绍了碱化剂的国内外发展历程;其次,从材料类型、水化学、碱化剂物理化学性质等3个角度讨论了碱化剂与材料的相容性;最后,论述了碱化剂调节pH的原理,并详细介绍了有机胺分子与材料表面氧化膜间的作用机制。Impurities such as pipeline corrosion products and dissolved oxygen etc.in the secondary circuit of pressurized water reactor(PWR)can enter the steam generator through the water supply system and deposit at different positions,resulting in the decrease of heat transfer capacity and the instability of thermal and hydraulic system.The water chemistry control in secondary circuit of PWR is of great significance for a safe operation of system equipment and core components.The purpose of this work is to summarize the application of pH control agents at home and abroad,and the research progress in the compatibility between employed alkalizing agents and structural materials.Firstly,the development process in alkalizing agent for PWR secondary circuit and its application at home and abroad are detailed.Secondly,the factors influencing the compatibility between the employed alkalizing agents and structural materials are discussed from three aspects:structural materials,hydrochemistry and the physicochemical properties of alkalizing agents.Finally,the working mechanism of alkalizing agent in adjusting pH is discussed,especially the mechanism of interactions between amine molecules and the oxide scales formed on the surface of structural materials.

关 键 词：二回路 碱化剂 水化学 乙醇胺 结构材料 

分 类 号：TG174[金属学及工艺—金属表面处理]