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Effect of ZrB2 addition on SmCo-1:7 high temperature magnets

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posted on 2010-09-07, 12:00 authored by Fernando M.F. Rhen, Munuswamy Venkatesan, I. Rex Harris, John Michael David Coey
This work focuses on a search for magnets that can be used at elevated temperature. We have studied the effect of ZrB2 addition on the magnetic properties and stability of nanocrystalline 1:7 type Sm(Co,Ti,Zr) magnets up to 500°C. Amorphous ball milled powder was annealed to develop the TbCu7 type structure. The room temperature coercivity of SmCo6.5(ZrB2)0.033Ti0.4 is 2.1 T. The microstructure is stable at 400°C, where the coercivity is 0.5T.

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peer-reviewed

Other Funding information

HITEMAG Project, EU Growth Program

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English

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