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Bilayered Glass-Ceramics as Sealants for SOFCs

材料科学与工程（中英文A版） 2019年第2期9卷 43-55页

作者： Stefanie Hauber svenja Dittrich Tobias M. Walter Bernhard Durschang Karl G. Schell Ethel C. Bucharsky Elisabeth Reitz Gerhard Sextl Michael J. Hoffmann Fraunhofer ISC Würzburg 97082 Germany Karlsruhe Institute of Technology IAM-KWT Karlsruhe 76131 Germany ElringKlinger AG Dettingen an der Erms 72581 Germany

Glass-ceramics are often used as sealants in solid oxide fuel cells (SOFC). But interfacing components, such as ferritic stainless steel and YSZ electrolyte, may vary in their requirements regarding sealing properties, especially in terms of thermal expansion. A bilayered glass-ceramic system was developed to overcome the mismatch in coefficients of thermal expansion (CTE) between ferritic steel and YSZ. Therefore, two different glass-ceramics with slightly different CTEs were developed, one with good bonding characteristics to the ferritic steel and the other to the YSZ electrolyte. Steel and electrolyte components were coated with a layer of their corresponding glass sealant paste and heated up to form a sandwich sample. During the heat treatment of the sealing process, the glasses are crystallized into glass-ceramics. The resulting interface between the two glass-ceramics is of special interest. Cross-sections of the sandwich samples were cut, polished and investigated using SEM. The glass-ceramics show continuous, gap-free layers and excellent bonding to both steel and YSZ. Energy release rates are measured for single and bilayered glass sealants by mechanical testing. The designed bilayered glass-ceramics fulfill the special requirements of ferritic steel and YSZ. They show excellent potential to become a new outstanding sealant for SOFCs.

关键词： SOFC bilayered glass-ceramic sealant screen-printing Charalambides crystallization

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Dense matter with eXTP

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Science China(Physics,Mechanics & Astronomy) 2019年第2期62卷 28-44页

作者： Anna L.Watts WenFei Yu Juri Poutanen Shu Zhang Sudip Bhattacharyya Slavko Bogdanov Long Ji Alessandro Patruno Thomas E.Riley Pavel Bakala Altan Baykal Federico Bernardini Ignazio Bombaci Edward Brown Yuri Cavecchi Deepto Chakrabarty Jér?me Chenevez Nathalie Degenaar Melania Del Santo Tiziana Di Salvo Victor Doroshenko Maurizio Falanga Robert D.Ferdman Marco Feroci Angelo F.Gambino MingYu Ge svenja K.Greif Sebastien Guillot Can Gungor Dieter H.Hartmann Kai Hebeler Alexander Heger Jeroen Homan Rosario Iaria Jean in 't Zand Oleg Kargaltsev Aleksi KurkelaTheoretical Physics Department CERN XiaoYu Lai Ang Li XiangDong Li ZhaoSheng Li Manuel Linares FangJun Lu Simin Mahmoodifar Mariano Méndez M.Coleman Miller Sharon Morsink Joonas N?ttil? Andrea Possenti Chanda Prescod-Weinstein JinLu Qu Alessandro Riggio Tuomo Salmi Andrea Sanna Andrea Santangelo Hendrik Schatz Achim Schwenk LiMing Song Eva?rámková Benjamin Stappers Holger Stiele Tod Strohmayer Ingo Tews Laura Tolos Gabriel T?r?k David Tsang Martin Urbanec Andrea Vacchi RenXin Xu YuPeng Xu Silvia Zane GuoBao Zhang ShuangNan Zhang WenDa Zhang ShiJie Zheng Xia Zhou Anton Pannekoek Institute for Astronomy University of Amsterdam Shanghai Astronomical Observatory Tuorla Observatory Department of Physics and Astronomy University of Turku Nordita KTH Royal Institute of Technology and Stockholm University Institute of High Energy Physics Chinese Academy Sciences Tata Institute of Fundamental Research Columbia Astrophysics Laboratory Columbia University Institut für Astronomie und Astrophysik Tübingen Universit?t Tübingen Leiden Observatory Leiden University Research Center for Computational Physics and Data Processing Silesian University in Opava Physics Department Middle East Technical University INAF Osservatorio Astronomico di Roma New York University Abu Dhabi Dipartimento di Fisica Enrico Fermi University of Pisa INFN Italian National Institute for Nuclear Physics Department of Physics and Astronomy Michigan State University Department of Astrophysical Sciences Princeton University Mathematical Sciences and STAG Research Centre University of Southampton MIT Kavli Institute for Astrophysics and Space Research DTU Space Technical University of Denmark INAF/IASF Palermo via Ugo La Malfa 153 Universita degli Studi di Palermo Dipartimento di Fisica e Chimica International Space Science Institute (ISSI) Faculty of Science University of East Anglia INAF Istituto di Astrofisica e Planetologie Spaziali Institut für Kernphysik Technische Universit?t Darmstadt ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Instituto de Astrof'?sica Pontificia Universidad Católica de Chile Department of Physics & Astronomy Kinard Lab of Physics Clemson University School of Physics and Astronomy Monash University SRON Netherlands Institute for Space Research Department of Physics The George Washington University Faculty of Science and Technology University of Stavanger School of Physics and Mechanical & Electrical Engineering Hubei University of Education Department of Astronomy Xiamen University (Haiyun Campus) School of Astronomy and Space

In this White Paper we present the potential of the Enhanced X-ray Timing and Polarimetry(eXTP) mission for determining the nature of dense matter; neutron star cores host an extreme density regime which cannot be replicated in a terrestrial laboratory. The tightest statistical constraints on the dense matter equation of state will come from pulse profile modelling of accretion-powered pulsars, burst oscillation sources, and rotation-powered pulsars. Additional constraints will derive from spin measurements, burst spectra, and properties of the accretion flows in the vicinity of the neutron star. Under development by an international Consortium led by the Institute of High Energy Physics of the Chinese Academy of Sciences, the eXTP mission is expected to be launched in the mid 2020 s.

关键词： neutron X-rays dense matter equation of state

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开放教育:一个有待进一步研究的领域

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中国远程教育 2021年第2期 46-58,77页

作者： [德]奥拉夫·扎瓦克奇-里克特 [加]黛安·康拉德阿拉斯·博兹库尔特坚吉兹·哈坎·艾登斯韦尼亚·贝登利耶郑仁星约阿希姆·斯图特乔治·韦利特西亚诺斯丽莎·玛丽·布拉斯科梅丽莎·邦德安德里亚·布朗斯艾丽莎·布鲁恩卡莱娜·多尔西马可·卡尔兹迈克尔·克雷斯亚萨尔·孔达奇维多利亚·马林克斯汀·梅伯格沃尔夫冈·穆斯肯斯索姆·奈杜阿德南·卡尤姆詹妮弗·罗伯茨艾伯特·桑格拉弗兰克·森约·洛各洛帕特丽夏·J.斯莱格·范·特伦肖俊洪(译) 德国奥尔登堡大学开放教育研究中心COER团队德国奥尔登堡卡尔·冯·奥西茨基大学土耳其阿纳多卢大学德国埃尔朗根-纽伦堡弗里德里希·亚历山大大学日本国际基督教大学加拿大皇家大学欧洲远程E-Learning网络协会英国伦敦大学学院德国海德堡教育大学杜伊斯堡-埃森大学中东技术大学德国汉堡大学斐济南太平洋大学美国宾夕法尼亚州立大学南非大学西班牙加泰罗尼亚奥贝塔大学美国东卡罗来纳州立大学中国汕头开放大学不详

本文阐述高等教育背景下开放教育的内容。文章首先介绍开放教育的起源及其理论基础,随后根据远程开放学习研究的宏观、中观和微观层次框架讨论远程开放学习、开放教育实践、开放学术、开放教育资源、慕课、先前学习认定、学习者特征和... 详细信息

本文阐述高等教育背景下开放教育的内容。文章首先介绍开放教育的起源及其理论基础,随后根据远程开放学习研究的宏观、中观和微观层次框架讨论远程开放学习、开放教育实践、开放学术、开放教育资源、慕课、先前学习认定、学习者特征和开放教育国际化等主题的内容。最后从宏观、中观和微观层面提出今后的研究方向。

关键词：开放教育开放学习远程教育灵活学习在线学习开放教育资源国际化

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