AP1000一回路氧化膜特性研究

辐射防护 ›› 2021, Vol. 41 ›› Issue (4): 302-308.

AP1000一回路氧化膜特性研究

崔玉杰¹, 武明亮¹, 张义², 牛强², 王永仙¹, 郭丽潇¹, 赵伟¹, 崔安熙

1.中国辐射防护研究院,太原 030006;
2.山东核电有限公司,山东烟台 265116

收稿日期:2020-04-25 出版日期:2021-07-20 发布日期:2021-09-23
作者简介:崔玉杰(1995—),男,2018年毕业于南华大学核工程与核技术专业,现为中国辐射防护研究院辐射防护与环境保护专业硕士研究生。E-mail:CYJ199506@163.com

Research of oxide film properties of AP1000 primary loop

CUI Yujie¹, WU Mingliang¹, ZHANG Yi², NIU Qiang², WANG Yongxian¹, GUO Lixiao¹, ZHAO Wei¹, CUI Anxi

1. China Institute for Radiation Protection, Taiyuan 030006;
2. Shandong Nuclear Power Co. Ltd., Shandong Yantai 265116

Received:2020-04-25 Online:2021-07-20 Published:2021-09-23

摘要/Abstract

摘要： AP1000与一般压水堆不同的是其一回路采用注锌加氢技术,使其一回路氧化膜特性发生变化。试验在高压釜中模拟AP1000一回路水化学工况,研究F304L、F316、690三种反应堆主工艺设备材料表面生成的氧化膜特性。结果表明,氧化膜为双层结构,外层氧化膜成分主要是Fe₂O₃及Fe₃O₄。F304L不锈钢与F316不锈钢内层氧化膜主要是ZnCr₂O₄,注入的Zn元素取代了FeCr₂O₄中的铁元素,形成了致密的ZnCr₂O₄氧化层,内层氧化膜存在少量ZnO和ZnFe₂O₄。690合金的氧化膜内层为ZnCr₂O₄,同时存在较高含量的ZnO和ZnFe₂O₄。与前两者不同的是,690合金的氧化膜含少量的二价镍,以NiFe₂O₄和NiCr₂O₄形式存在。加锌加氢使得氧化膜更加致密,也明显变薄。

关键词: AP1000, 加锌, 加氢, 氧化膜

Abstract: The difference between AP1000 and other general PWRs is that its primary loop adopts zinc in-jection and hydrogenation technology, which changes the characteristics of oxide film in the pri-mary loop. The experiment simulates water chemistry condition of AP1000 primary loop in auto-clave to study the characteristics of the oxide film formed on the surface of the three main reactor process equipment materials of F304L, F316, and 690. The results show that the oxide film is a bilayer structure, and the outer oxide film components are mainly Fe₂O₃ and Fe₃O₄. The inner oxide film of F304L and F316 stainless steel is mainly ZnCr₂O₄, and the injected Zn element replaces the iron element in FeCr₂O₄ to form a dense ZnCr₂O₄ oxide layer. A small amount of ZnO and ZnFe₂O₄ is present in the inner oxide film. The inner oxide film of 690 alloy is ZnCr₂O₄, with high content of ZnO and ZnFe₂O₄. Unlike F304L, F316, the oxide film of the 690 alloy contains a small amount of divalent nickel in the form of NiFe₂O₄ and NiCr₂O₄. The addition of zinc and hydrogen makes the oxide film denser and sig-nificantly thinner.

Key words: AP1000, zinc addition, hydrogenation, oxide film

中图分类号:

TL944

崔玉杰, 武明亮, 张义, 牛强, 王永仙, 郭丽潇, 赵伟, 崔安熙. AP1000一回路氧化膜特性研究[J]. 辐射防护, 2021, 41(4): 302-308.

CUI Yujie, WU Mingliang, ZHANG Yi, NIU Qiang, WANG Yongxian, GUO Lixiao, ZHAO Wei, CUI Anxi. Research of oxide film properties of AP1000 primary loop[J]. RADIATION PROTECTION, 2021, 41(4): 302-308.

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