Kauffmann-Weiss, Sandra ; Scheerbaum, Nils ; Liu, Jian ; Klauss, Hansjörg ; Schultz, Ludwig ; Mäder, Edith ; Häßler, Rüdiger ; Heinrich, Gert ; Gutfleisch, Oliver (2012)
Reversible Magnetic Field Induced Strain in Ni2MnGa-Polymer-Composites.
In: Advanced Engineering Materials, 14 (1-2)
doi: 10.1002/adem.201100128
Article, Bibliographie
Abstract
Composite materials consisting of magnetic shape memory alloy particles and a polymer matrix combine the advantages of both material classes: the high achievable magnetic field induced strain (MFIS) of 6% of Ni-Mn-Ga with a ductile matrix. Engineering the particle-matrix interface as well as matching stiffness of polymer matrix is of importance for achieving high reversible MFIS to use this material as actuator or damper. We investigated those properties for Ni50.9Mn27.1Ga22.0 and Ni50.3Mn24.6Ga25.1 polymer composites. Particles were produced by gently crushing melt-extracted and subsequently annealed fibres. At room temperature, the Ni50.9Mn27.1Ga22.0 particles exhibit a 5M martensitic structure, while the Ni50.3Mn24.6Ga25.1 particles are austenitic. These particles were embedded into the polymer, either a stiff epoxy resin or a soft polyurethane. In response to an external applied magnetic field, the particles tend to relocate within the polyurethane due to its very low Young's modulus and magnetostatic interaction between particles. Slightly stiffer polymer matrices are advantageous for achieving controllable MFIS. In Ni50.9Mn27.1Ga22.0 epoxy composites, a MFIS of 0.1% was observed and was resettable by rotating the magnetic field by 90°. Furthermore, single fibre pull-out tests indicated significant improvements of the interfacial properties when using silane coupling agent treated fibres.
| Item Type: | Article |
|---|---|
| Erschienen: | 2012 |
| Creators: | Kauffmann-Weiss, Sandra ; Scheerbaum, Nils ; Liu, Jian ; Klauss, Hansjörg ; Schultz, Ludwig ; Mäder, Edith ; Häßler, Rüdiger ; Heinrich, Gert ; Gutfleisch, Oliver |
| Type of entry: | Bibliographie |
| Title: | Reversible Magnetic Field Induced Strain in Ni2MnGa-Polymer-Composites |
| Language: | English |
| Date: | February 2012 |
| Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
| Journal or Publication Title: | Advanced Engineering Materials |
| Volume of the journal: | 14 |
| Issue Number: | 1-2 |
| DOI: | 10.1002/adem.201100128 |
| Abstract: | Composite materials consisting of magnetic shape memory alloy particles and a polymer matrix combine the advantages of both material classes: the high achievable magnetic field induced strain (MFIS) of 6% of Ni-Mn-Ga with a ductile matrix. Engineering the particle-matrix interface as well as matching stiffness of polymer matrix is of importance for achieving high reversible MFIS to use this material as actuator or damper. We investigated those properties for Ni50.9Mn27.1Ga22.0 and Ni50.3Mn24.6Ga25.1 polymer composites. Particles were produced by gently crushing melt-extracted and subsequently annealed fibres. At room temperature, the Ni50.9Mn27.1Ga22.0 particles exhibit a 5M martensitic structure, while the Ni50.3Mn24.6Ga25.1 particles are austenitic. These particles were embedded into the polymer, either a stiff epoxy resin or a soft polyurethane. In response to an external applied magnetic field, the particles tend to relocate within the polyurethane due to its very low Young's modulus and magnetostatic interaction between particles. Slightly stiffer polymer matrices are advantageous for achieving controllable MFIS. In Ni50.9Mn27.1Ga22.0 epoxy composites, a MFIS of 0.1% was observed and was resettable by rotating the magnetic field by 90°. Furthermore, single fibre pull-out tests indicated significant improvements of the interfacial properties when using silane coupling agent treated fibres. |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Functional Materials 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 19 May 2014 12:25 |
| Last Modified: | 19 May 2014 12:25 |
| PPN: | |
| Funders: | This work is supported by DFG SPP 1239. |
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