Microstructure and Magnetic Properties of Rapidly Solidified Sm(CobalFe0.11Cu0.10Zrx)7 Alloys

Li Ya Li; Yi Cheng Ge; Yuan Dong Peng

doi:10.4028/www.scientific.net/AMR.893.357

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 893Microstructure and Magnetic Properties of Rapidly...

Microstructure and Magnetic Properties of Rapidly Solidified Sm(Co_balFe_0.11Cu_0.10Zr_x)₇Alloys

Abstract:

We reported a systematic study of the effect of Zr content on the structural and magnetic properties of rapidly quenched Sm (Co_balFe_0.11Cu_0.10Zr_x)₇ alloys with x varying from 0 to 0.04. The results show that the addition of Zr greatly affected the microstructure and magnetic properties of the heat-treated ribbons. The Zr-free ribbon had crystallized as the 1:7H structure as the main phase while the ribbon with Zr addition adopted the 2:17R structure type. A Sm₂Co₇ phase was observed in the heat-treated ribbons when the Zr content x increased to 0.04. It is found that while the Zr content was increased from 0 to 0.04, saturation magnetization of the heat-treated ribbons was decreased from 11.9kGs to 3.3 kGs, and the intrinsic coercivity was increased from 0.07 kOe to 11.7 kOe. The highest intrinsic coercivity, H_ci=11.7 kOe, was obtained in the ribbon with Zr content of 0.03.

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Advanced Materials Research (Volume 893)

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357-360

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https://doi.org/10.4028/www.scientific.net/AMR.893.357

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Online since:

February 2014

Authors:

Li Ya Li, Yi Cheng Ge*, Yuan Dong Peng

Keywords:

Coercivity, Grain Size, Rapid-Solidification, SmCo₇ Permanent Magnets, Structure

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