| Projecttitle | Projecttype |
|---|---|
| Mikrostrukturierte Ni-Ti-X-Schichten: Herstellung & Charakterisierung schaltbarer adaptiver Oberflächen | DFG, SFB 459, Teilprojekt B9 |
| Kombinatorische Entwicklung von ternären und quaternären Formgedächtnis-Schichten | DFG, SFB 459, Teilprojekt C9 |
| Mikrosystemtechnische parallele in situ Messung von Schichtspannung, -temperatur und elektrischem Widerstand bei Plasmabeschichtungsprozessen | DFG, SFB-TR 87, Teilprojekt C2 |
| Herstellung und Charakterisierung nanoskaliger Formgedächtnis- Schichtobjekte - Skalierungseffekte und Grenzen der reversiblen martensitischen Transformation | DFG Sachbeihilfe |
| Einfluss der Legierungszusammensetzung und des Gefüges auf das Ermüdungsverhalten diversr Substratgebundener Al-Schichten | DFG Sachbeihilfe |
| Nanostrukturierte magnetische Dünnschicht-Komposite für Anwendungen in der Hochtemperatur-Sensorik | DFG SPP 1299 |
| Combinatorial Development of New Ferromagnetic Shape Memory Thin Films with Improved Intrinsic Properties | DFG SPP 1239 „Änderung von Mikrostruktur und Form fester Werkstoffe durch äußere Magnetfelder“ |
| Spatially resolved modeling and characterization of (de)intercalation in Li-ion battery materials | DFG SPP 1473: WeNDeLIB - Werkstoffe mit neuem Design für verbesserte Lithium-Ionen-Batterien |
SFB 459 "Shape Memory Effect"
The interdisciplinary "Center for Shape Memory Technology" (SFB 459 - Formgedächtnistechnik) at the Ruhr-University Bochum brings together a team of engineers and scientists from various fields for integrative research in the area of shape memory alloys. All phases of the research, including alloy design, mechanical processing and testing, microstructural characterization, and deformation modeling, are performed using facilities within the center.
Click here for more information.
SFB-TR 87 "Gepulste Hochleistungsplasmen zur Synthese nanostrukturierter Funktionsschichten"
Click here for more information.
SPP 1239 "Change of microstructure and shape of solid materials by external magnetic fields"
Shape memory alloys are a class of adaptive materials, which can exhibit a reversible shape change due to temperature variation. The origin of this effect is the phase transformation between the high temperature "austenite" and the low temperature "martensite" phase. In single crystals of special magnetic shape memory materials in 1996 a further, fundamentally new actuation mechanism had been discovered in the martensite phase. It was observed, that already comparably low magnetic fields (< 1 Tesla) can be sufficient to move twin boundaries contained in the material. Since the twin boundaries are separating areas of different crystallographic orientations, their displacement leads to a reorientation of the crystal. This allows controlling the microstructure and shape of the sample by applying magnetic fields. The observed change in length of up to 10 % is, compared to magnetostrictive or piezoceramic materials, by more than two orders of magnitude higher. Due to the unique combination of very large strain, high energy density and relatively high actuation frequencies magnetic shape memory alloys thus allow novel applications which are not possible with conventional adaptive materials.
Click here for more information.
SPP 1299 "Adapting surfaces for high temperature applications - The „Haut“-concept"
Metallic and ceramic materials are typically considered as „dead matter“. Particularly at elevated and high temperatures (approx. 650 – 1100°C) tailored surfaces have the potential to react to effects from the environment in a very specific way and thus may provide special functionalities to a technical component.
Click here for more information.