(알니코, 사마리움-코발트) 본드자석의 제조 및 자기적 특성연구 = Fabrication of the (Alnico, Sm-Co) Bonded Magnet and its Magnetic Properties

다국어 초록 (Multilingual Abstract)

In this study the (Alnico, Sm-Co) bonded magnets were fabricated by mixing the Sm-Co added alnico alloy powders with epoxy resin and binder, appropriately. Also, the hybrid ring magnets of (Alnico, Sm-Co)/Sr-ferrite were fabricated by coupling the Sr-ferrite composite layer with an (Alnico, Sm-Co) magnet. The magnetic properties of (Alnico, Sm-Co) ring magnets were varied with the amount of Sm-Co powders. The addition of Sm-Co powders increased a remanent induction($B_r$) and coercive force($_BH_C$), while decreasing a surface flux density and repulsive distance. The surface flux density and repulsive distance for the (Alnico, Sm-Co) ring magnet increased with a magnetizing voltage up to about 160 V and reached an apparent saturation point. Also, the measurements of temperature and moisture characteristics showed that the surface flux densities of N-S poles and repulsive distance decreased a little within 4% after 10 days passed.

참고문헌 (Reference)

1 R. A. McCurrie, 3 : 107-, 1982

2 T. Mishima, 19 : 353-, 1932

3 D. Oliver, 142 : 209-, 1938

4 M. Hamano, 1037-, 1992

5 W. Schäfer, 276 : 866-, 2000

6 X. Li, 51 : 5593-, 2003

7 Y. D. Shin, 9 : 93-, 1996

8 M. Hamano, 222 : 8-, 1995

9 D. Plusa, 423 : 81-, 2006

10 B. M. Ma, 239 : 418-, 2002

11 B. Zhang, 299 : 205-, 2006

12 S.-D. Kim, 307 : 295-, 2006

13 Rolin J. Parker, "Advances in Permanent Magnetism" John Wiley & Sons Inc 1990