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Development of Microactuators Based on the Magnetic Shape Memory Effect

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Book Series: Schriften des Instituts für Mikrostrukturtechnik am Karlsruher Institut für Technologie / Hrsg.: Institut für Mikrostrukturtechnik ISSN: 18695183 ISBN: 9783731501251 Year: Volume: 21 Pages: X, 153 p. DOI: 10.5445/KSP/1000036883 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:58
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The giant magneto-strain effect in Ni-Mn-Ga alloys is particularly attractive for actuator applications. Two different approaches are being pursued to develop MSM microactuators. To observe large deflections of Ni-Mn-Ga microactuators, the material should be exhibiting low twinning stress and large magnetic anisotropy. In addition, design rules and boundary conditions for operating the Ni-Mn-Ga actuator material are having significant importance for evolution of performance characteristics.

Mechanische Zuverlässigkeit von gedruckten und gasförmig abgeschiedenen Schichten auf flexiblem Substrat

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Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783731502500 Year: Volume: 41 Pages: VI, 153 p. DOI: 10.5445/KSP/1000042371 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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In dieser Arbeit wird das Schädigungsverhalten von ITO-Schichten und von linienförmig strukturierten Silberschichten (Silbergrids) auf flexiblem Substrat geprüft. Ein weiterer Schwerpunkt liegt in der mechanischen Untersuchung von gedruckten Silberschichten. So wird der Effekt von Wärmebehandlungen auf Schichten aus nanopartikulärer Tinte analysiert. Außerdem werden Schichten aus metallorganischen Tinten mit unterschiedlichen Schichtdicken im Vergleich zu evaporierten Proben untersucht.

Metallic Glasses

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ISBN: 9783038425076 9783038425069 Year: Pages: 194 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-01-04 14:58:25
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Due to their amorphous character and the concomitant lack of dislocations, metallic glasses exhibit physical and chemical properties that are quite different from those of other solid materials. For example, they can be twice as strong as steels, exhibit superior soft magnetic behavior and outstanding corrosion resistance and, sometimes, interesting catalytic properties, thus having potential for a widespread range of technological applications. The aim of this book is to address, from both experimental and theoretical points of view, some of the challenges to improve the glass forming ability of these materials, to optimize their overall mechanical performance, and to enhance their functional properties. Through the contributions from different renowned authors in the field, new prospects towards the development of innovative compositions and novel applications, particularly in devices with micrometer and submicrometer sizes, are provided, where the full potential of these glassy materials is being achieved.

Metals Challenged by Neutron and Synchrotron Radiation

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ISBN: 9783038426790 9783038426806 Year: Pages: 288 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mining and Metallurgy
Added to DOAB on : 2018-02-08 13:10:36
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Neutron and Synchrotron radiation methods have matured to become powerful techniques for the study of a vast range of materials, including metals. The characterization methods comprise the categories of diffraction, spectroscopy and imaging, which themselves can alter greatly in detail, to include hundreds of variants, problems and sample environments. In a similar way, their applications to metals and hard condensed matter materials cover disciplines spanning engineering, physics, chemistry, materials science and their derivatives such as geology, energy storage, etc. … The present book, “Metals Challenged by Neutron and Synchrotron Radiation” is a first compilation in Metals of 20 original and review works on research utilizing or designing those state-of-the-art techniques at modern facilities. The Editorial reviews the context of and identifies thematic links between these papers, grouping them into five interwoven themes, namely Sintering Techniques and Microstructure Evolution, Titanium Aluminides and Titanium Alloys Under Extreme Conditions, Metallic Glass and Disordered Crystals, In Situ and Time-Resolved Response to Mechanical Load and Shock, and Thin Films and Layers. This book represents a good cross-section of the status quo of neutron and synchrotron radiation with respect to questions in the metallurgical field, which by far is not exhaustive. Nor are the methods and other materials, which motivated me to the creation of a new sister-journal, entitled Quantum Beam Science. With this, I would like to thank all authors, reviewers and contributors behind the scene for the creation of this work, presenting to you a piece of interesting reading and reference literature.

Small Scale Deformation using Advanced Nanoindentation Techniques

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ISBN: 9783038979661 / 9783038979678 Year: Pages: 168 DOI: 10.3390/books978-3-03897-967-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2019-06-26 08:44:06
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Small scale mechanical deformations have gained a significant interest over the past few decades, driven by the advances in integrated circuits and microelectromechanical systems. One of the most powerful and versatile characterization methods is the nanoindentation technique. The capabilities of these depth-sensing instruments have been improved considerably. They can perform experiments in vacuum and at high temperatures, such as in-situ SEM and TEM nanoindenters. This allows researchers to visualize mechanical deformations and dislocations motion in real time. Time-dependent behavior of soft materials has also been studied in recent research works. This Special Issue on ""Small Scale Deformation using Advanced Nanoindentation Techniques""; will provide a forum for researchers from the academic and industrial communities to present advances in the field of small scale contact mechanics. Materials of interest include metals, glass, and ceramics. Manuscripts related to deformations of biomaterials and biological related specimens are also welcome. Topics of interest include, but are not limited to:

Ceramic Conductors

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ISBN: 9783038979562 / 9783038979579 Year: Pages: 184 DOI: 10.3390/books978-3-03897-957-9 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2019-06-26 08:44:06
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This Special Issue of Crystals contains papers focusing on various properties of conducting ceramics. Multiple aspects of both the research and application of this group of materials have been addressed. Conducting ceramics are the wide group of mostly oxide materials which play crucial roles in various technical applications, especially in the context of the harvesting and storage of energy. Without ion-conducting oxides, such as yttria-stabilized zirconia, doped ceria devices such as solid oxide fuel cells would not exist, not to mention the wide group of other ion conductors which can be applied in batteries or even electrolyzers, besides fuel cells. The works published in this Special Issue tackle experimental results as well as general theoretical trends in the field of ceramic conductors, or electroceramics, as it is often referred to.

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