Magnetostrictive SmFe2/metal composites
| Autor: | E. G. Brewer, T. W. Capehart, C. B. Murphy, Frederick E. Pinkerton, J. F. Herbst |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Applied Physics Letters. 70:2601-2603 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.118930 |
| Popis: | We have fabricated novel magnetostrictive composites consisting of SmFe2 embedded in an Fe or Al matrix which feature high magnetostriction and good mechanical strength. Hot pressed composites of 50% SmFe2/50% Fe or Al by volume have magnetostrictive strains parallel to the applied magnetic field, λ∥, between −280 and −440 ppm when consolidated at 610 (Fe) or 540 °C (Al). One unique feature of this work is the production of the magnetostrictive SmFe2 component by melt spinning; ribbon-based composites with Al combine significant magnetic coercivity, Hci=3 kOe, with high magnetostriction (λ∥=−280 ppm). Unlike their brittle SmFe2 parent materials, the composites are easily machinable. |
| Databáze: | OpenAIRE |
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