Abstract
Sm-Co magnet was attracted attention due to its high Curie temperature and superior comprehensive magnetic properties [1-5]. Different with powder metallurgy method, melt spinning is another efficient way to prepare Sm-Co magnet. The quenching speed in melt spinning is a critical factor to obtain ribbons with high magnetic properties. Recently, D.Y. Feng [6] et al. reported that intrinsic coercivity of SmCo 6.8 Zr 0.2 ribbons increases from 1.54kOe to 13.45 kOe with the wheel speed rising from 5 m/s to 60 m/s. And the crystallographic c-axis is parallel to the ribbon plane for the ribbons melt-spun at low speeds of 5 and 15 m/s, and this c-axis orientation is weakened at higher speeds. Tetsuji Saito [7] et al. reported that Fe content has an effect on the phase composition. A small substitution of Fe for Co in the SmCo 5 alloy leads to the formation of the Sm(Co, Fe) 5 phase, but that the large substitution of Fe for Co results in the formation of other phases such as the Sm(Co, Fe) 7 and Sm 2 (Co, Fe) 7 phases.
Published Version
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