The effect of Ce on the high temperature oxidation properties of a Fe-22% Cr steel: microstructural investigation and EELS analysis

Sattari M.; Sachitanand R.; Froitzheim J.; Svensson J. E.; Jonsson T.

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The effect of Ce on the high temperature oxidation properties of a Fe-22% Cr steel: microstructural investigation and EELS analysis

机译：Ce对Fe-22％Cr钢高温氧化性能的影响：显微组织研究和EELS分析

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The effect of a 10 nm Ce coating layer on long term oxidation behaviour (up to 3000 hours) of a Fe-22% Cr ferritic stainless steel for solid oxide fuel cell (SOFC) interconnect application is investigated. Scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) analysis showed segregation of Ce to the grain boundaries of Cr, Mn spinel layer adjacent to the scale-gas interface. The findings in this study are in line with the grain boundary blocking model for the Ce effect mechanism. However, segregation of Ce was observed at the grain boundaries of the (Cr, Mn) spinel in the vicinity of the scale-gas interface. No evidence of Ce segregation was found in the grain boundaries of the chromia layer, neither any Ce rich particle was observed in the chromia layer after longer exposure times.

机译：研究了10 nm Ce涂层对用于固体氧化物燃料电池（SOFC）互连应用的Fe-22％Cr铁素体不锈钢的长期氧化行为（长达3000小时）的影响。扫描透射电子显微镜（STEM）和电子能量损失谱（EELS）分析表明，Ce偏析于邻近氧化皮-气体界面的Cr，Mn尖晶石层的晶界。这项研究的发现与铈效应机理的晶界阻挡模型相吻合。但是，在水垢-气体界面附近的（Cr，Mn）尖晶石的晶界处观察到Ce的偏析。在氧化铬层的晶界中没有发现Ce偏析的证据，经过更长的曝光时间后，在氧化铬层中也没有观察到任何富Ce的颗粒。

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《Materials at High Temperatures》 |2015年第2期|共5页
作者
Sattari M.; Sachitanand R.; Froitzheim J.; Svensson J. E.; Jonsson T.;
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正文语种 eng
中图分类工程材料学;
关键词
Reactive elements effect (REE); Ce coating; High temperature oxidation; Ferritic stainless steel; Solid oxide fuel cell (SOFC); Interconnect;

机译：活性元素效应（REE）;Ce涂层;高温氧化;铁素体不锈钢;固体氧化物燃料电池（SOFC）;互连;

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1. The effect of Ce on the high temperature oxidation properties of a Fe-22% Cr steel: microstructural investigation and EELS analysis [J] . Sattari M., Sachitanand R., Froitzheim J., Materials at High Temperatures . 2015,第1a2期

机译：Ce对Fe-22％Cr钢高温氧化性能的影响：显微组织研究和EELS分析
2. An investigation into the room temperature mechanical properties and microstructural evolution of thermomechanically processed TWIP steel [J] . A.R. Khalesian, A. Zarei-Hanzaki, H.R. Abedi, Materials Science and Engineering . 2014,第feba24期

机译：热机械加工TWIP钢的室温力学性能和组织演变研究
3. Microstructural Investigations of Al{sub}2O{sub}3 Scale Formed on FeCrAl Steel during High Temperature Oxidation in SO{sub}2 [J] . M. Homa, Z. Zurek, B. Morgiel, Corrosion Science and Technology . 2008,第3期

机译：SO {sub} 2高温氧化过程中FeCrAl钢上形成的Al {sub} 2O {sub} 3垢的显微组织研究
4. Microstructural Investigation of M2 High Speed Steel Produced by Selective Laser Melting: Microstructural Investigation of M2 High Speed Steel [C] . Liu Zhong Hong, Chua Chee Kai, Leong Kah Fai, Symposium on Photonics and Optoelectronics . 2012

机译：选择性激光熔化产生的M2高速钢的微观结构研究：M2高速钢的微观结构研究
5. Microstructural Effects on High-Temperature Selective Oxidation of CMnSi Advanced High-Strength Steels [D] . Story, Mary E. 2018

机译：CMnSi高级高强度钢对高温选择性氧化的组织影响
6. Effects of Silicon Content and Tempering Temperature on the Microstructural Evolution and Mechanical Properties of HT-9 Steels [O] . Junkai Liu, Wenbo Liu, Zhe Hao, 2020

机译：硅含量和回火温度对HT-9钢组织演变和力学性能的影响
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。

The effect of Ce on the high temperature oxidation properties of a Fe-22% Cr steel: microstructural investigation and EELS analysis

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