Grirem Advanced Materials Co., Ltd.

Guiyong Wu

Yang Luo

Dunbo Yu

Wenlong Yan

Hongwei Li

Jiajun Xie

Yuanfei Yang

Xiao Lin

Zilong Wang

Zhongkai Wang

Chao Yuan

Ningtao Quan

The present disclosure discloses an yttrium (Y)-added rare-earth permanent magnetic material and a preparation method thereof. A chemical formula of the material expressed in atomic percentage is (YxRE1-x)aFebalMbNc, wherein 0.05&#x2264;x&#x2264;0.4, 7&#x2264;a&#x2264;13, 0&#x2264;b&#x2264;3, 5&#x2264;c&#x2264;20, and the balance is Fe, namely, bal=100-a-b-c; RE represents a rare-earth element Sm, or a combination of the rare-earth element Sm and any one or more elements of Zr, Nd and Pr; M represents Co and/or Nb; and N represents nitrogen. In the preparation method, the rare-earth element Y is utilized to replace the element Sm of a samarium-iron-nitrogen material. By regulating a ratio of the element Sm to the element Y, viscosity of an alloy liquid can be reduced, and an amorphous forming ability of the material is enhanced.

Yttrium-added rare-earth permanent magnetic material and preparation method thereof

Provided are a highly thermostable rare-earth permanent magnetic material, a preparation method thereof and a magnet containing the same. A composition of the rare-earth permanent magnetic material by an atomic percentage is as follows: SmRFeMN, wherein R is at least one of Zr and Hf, M is at least one of Co, Ti, Nb, Cr, V, Mo, Si, Ga, Ni, Mn and Al, x+a is 7-10%, a is 0-1.5%, y is 0-5% and z is 10-14%.

Highly thermostable rare-earth permanent magnetic material, preparation method thereof and magnet containing the same

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Beijing, China

Guiyong Wu