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首页> 外文期刊>Corrosion >Corrosion Resistance of Power Plant Components Exploited for Long Terms at 600, 650, and 800° C
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Corrosion Resistance of Power Plant Components Exploited for Long Terms at 600, 650, and 800° C

机译：在600、650和800°C下长期使用的发电厂组件的耐腐蚀性

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摘要

Three austenitic steels (18Cr-8Ni, 18Cr-10Ni, and 21Cr-30Ni) exploited for long periods of time at temperatures between 600° C and 800° C were investigated. In the investigation, electrochemical potentiokinetic reactivation-double loop (EPR-DL) and oxalic acid etch corrosion tests, metallography, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, and energy-dispersive x-ray spectroscopy were used. In the severe sensitized 18Cr-8Ni steel, small, densely arranged intergranular particles, mostly of M^sub 23^C^sub 6^, were found. The 18Cr-8Ni steel was classified as less-sensitized compared to the 18Cr-8Ni steel as a result of the presence of larger, discrete grain boundary particles in addition to small, densely arranged particles. In the unsensitized 21Cr-30Ni steel, huge, discrete clusters often exceeding 10 µm were observed at the grain boundaries. The clusters were found to consist of large Cr-rich M^sub 23^C^sub 6^ and small Ti-rich MC particles. [PUBLICATION ABSTRACT]
机译：研究了三种奥氏体钢（18Cr-8Ni，18Cr-10Ni和21Cr-30Ni）在600°C至800°C的温度下长期开采。在研究中，使用了电化学电位动力学双活化（EPR-DL）和草酸蚀刻腐蚀试验，金相学，扫描电子显微镜，透射电子显微镜，选定区域电子衍射和能量色散X射线光谱。在严重敏化的18Cr-8Ni钢中，发现了小的，密集排列的晶间颗粒，其中大部分为M ^ sub 23 ^ C ^ sub 6 ^。与18Cr-8Ni钢相比，归因于18Cr-8Ni钢的敏感性较低，这是因为除了较小的，密集排列的粒子之外，还存在较大的离散晶粒边界粒子。在未敏化的21Cr-30Ni钢中，在晶界处观察到巨大的离散簇，通常超过10 µm。发现该团簇由大的富Cr的M ^ sub 23 ^ C ^ sub 6 ^和小的富Ti的MC颗粒组成。 [出版物摘要]

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    《Corrosion》 |2009年第6期|p.355-358|共4页
  • 作者

    P Gogola T Kuníková M Dománková P Sevc S Tuleja L Caplovic M Vach J Janovec;

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    P. Gogola[double dagger],*T. Kuníková,** M. Dománková,* P. ¿eve,*** S. Tuleja,**** L'. Óaplovio,' M. Vach,* and J. Janovec*Submitted for publication October 2008, in revised form, January 2009.[double dagger] Corresponding author. E-mail: peter.gogola@stuba.sk.* Institute of Materials Science, Faculty of Materials Science and Technology, Slovak University of Technology, Bottova 24, 917 24 Trnava, Slovak Republic.** PSL. a.s., Robotnicka ul., 017 01 Povafeka Bystrica, Slovak Republic.*** Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Koslce, Slovak Republic.**** Department of Materials Science, Metallurgical Faculty, Technical University of Koslce. Park Komenského 11, 042 00 Koslce, Slovak Republic.,;

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