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High Performance, Rare Earth-free Supermagnetostrictive Structures and Materials

技术优势: Broad range of industrial applicationsLow-cost approach as compared to Terfenol-DHighly efficient approach as compared to Ni- or Fe-Al-based alloysLeverages industry-standard manufacturing platforms

技术应用: Ultrasonic cleaners and pumpsUltra-precision actuator/motor/transducerTuned vibration absorbersMechanical device test stands Electroacoustic devicesSeismic sources

*Abstract: Magnetostrictive materials convert magnetic fields into mechanical strain and vice versa. They are widely used in sensors, actuators, electrical motors and other technological devices. The materials currently used for these applications are relatively inefficient (e.g. nickel or iron-aluminum alloys) or are very expensive (e.g. Terfenol-D). To address these challenges, researchers at the University of California, Berkeley, have developed a process framework using incipient martensitic transformations to achieve useful magnetostriction in relatively inexpensive materials. Early laboratory models suggest the Berkeley materials have comparable behavior to rare earth-based counterparts, with preliminary data to suggest superior performance than both rare earth-based and rare earth-free materials on the market today.

*Applications

*Principal Investigation: Name: Armen Khachaturyan
Department:

Name: John Morris, Jr.
Department:

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