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초록
Nd13Dy2Fe79B6 (at%) magnets were fabricated via cyclic sintering. The cyclic sintering of Nd-Fe-B powder yielded samples with densities greater than 98%. The bending strength and fracture toughness of the cyclic sintered specimens were 520 MPa and 6.16 MPa m(1/2), respectively, and the coercivity of the samples increased from 1666.8 kA/m to 1828.5 kA/m. Nd-rich phases may have effectively penetrated into the boundaries between neighboring Nd2Fe14B grains during the cyclic sintering process. The microstructures and shapes of the Nd-rich phases were effectively controlled, resulting in improved mechanical and magnetic properties.
키워드
Rare earth magnet; Cyclic sintering; Mechanical properties; Coercivity; Nd-rich phase; FE-B MAGNETS; ND; COERCIVITY
- 제목
- Mechanical properties of (Nd,Dy)-Fe-B magnets sintered via cyclic sintering
- 저자
- Kim, Jin Woo; Kim, Se Hoon; Kim, Young Do
- 발행일
- 2012-02
- 유형
- Article
- 저널명
- Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
- 권
- 535
- 페이지
- 325 ~ 329