Abstract
Abstract Eddy-current loss is the principal limitation to the use of Terfenol for high-frequency applications. Silicon-doped Terfenol materials, developed with the aim of reducing eddy-current loss to improve high-frequency performance, are described and compared with a composite, polymer-bonded Terfenol. Alloys with 1, 2 and 4 Wt% Si in Tb0.27Dy0.73Fe2 were prepared. The resistivity is shown to increase significantly, with 2% Si giving a threefold increase and a corresponding reduction in eddy-current loss, although this is counteracted by an increase in hysteresis loss and reductions in saturation magnetostriction and d-coefficient. Examination of the microstructure suggests that improved performance would result from slight modification to the composition. Dynamic magnetomechanical properties and energy loss of the Terfenol powder composite are shown to be generally superior to those of Si-Terfenol. Eddy-current loss is reduced by a factor of about 13, compared with bulk Terfenol, although this is not ...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
