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首页> 外文期刊>Corrosion science >Effects of oxides produced during welding on oxidation behavior of the 304L welded joint in simulated primary circuit solution of PWR
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Effects of oxides produced during welding on oxidation behavior of the 304L welded joint in simulated primary circuit solution of PWR

机译：焊接过程中氧化物在PWR模拟初级回路溶液中304L焊接接头氧化行为的影响

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摘要

In order to study the effect of welding oxide film on high temperature water oxidation, welded joint samples with welding oxide film were immersed in simulated primary loop solution of pressurized water reactor for 90 days. Both the type and thickness of the welding oxide film affect the atomic diffusion process of the high temperature water oxidation reaction, thus affecting the oxide type and oxidation rate. The chromium oxide in the chromium-rich welding oxide film was basically insoluble in high temperature water. The matrix metal atoms dissolved after passing through the film. The dissolved ions participated in the oxidation reaction and precipitate to form a new oxide film. The iron oxide in the chromium-poor welding oxide film and metal atoms in the matrix partially dissolved in high temperature water. The dissolved ions participated in the oxidation reaction and precipitated to form a new oxide film as well. The experimental results showed that the diffusion range of the dissolution process in the dissolution-reaction-precipitation mechanism was confined to the micron range.
机译：为了研究焊接氧化膜对高温水氧化的影响，将焊接氧化膜的焊接接头样品浸入模拟的压制水反应器的初级环溶液中90天。焊接氧化膜的类型和厚度都影响了高温水氧化反应的原子扩散过程，从而影响了氧化物型和氧化速率。富含铬的焊接膜中的氧化铬基本上不溶于高温水。通过薄膜后，基质金属原子溶解。溶解的离子参与氧化反应并沉淀以形成新的氧化膜。铬焊膜中的氧化铁和基质中的金属原子部分溶解在高温水中。溶解的离子参与氧化反应并沉淀以形成新的氧化物薄膜。实验结果表明，溶解 - 反应沉淀机理中溶出过程的扩散范围限制在微米范围内。

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  • 来源
    《Corrosion science》 |2020年第5期|108515.1-108515.13|共13页
  • 作者

    Ling Ligong; Guo Peiliang; Shang Chenguang; Lu Yonghao;

  • 作者单位

    Univ Sci & Technol Beijing Natl Ctr Mat Serv Safety Beijing 100083 Peoples R China|Nucl & Radiat Safety Ctr Beijing 102410 Peoples R China;

    Univ Sci & Technol Beijing Natl Ctr Mat Serv Safety Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Natl Ctr Mat Serv Safety Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Natl Ctr Mat Serv Safety Beijing 100083 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    304L; Welding oxide-film; High temperature oxidation; HRTEM; Oxidation rate;

    机译：304L;焊接氧化膜;高温氧化;HRTEM;氧化率;

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