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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.6
- 수록면
- 194 - 198 (5page)
- DOI
- 10.4283/JMAG.2021.26.2.194
이용수
초록· 키워드
오류제보하기
The mischmetal-based sintered magnets were prepared by mixing MM<SUB>8.8</SUB>Nd<SUB>3.4</SUB>Fe<SUB>81.8</SUB>B<SUB>6</SUB> (MM denotes mischmetal) with Nd<SUB>15</SUB>Fe<SUB>79</SUB>B<SUB>6</SUB> alloys. The magnet consist of two main phases i.e., (La,Ce)-rich main phase and Nd-rich main phase. For the mass ratio of 8:2 of MM<SUB>8.8</SUB>Nd<SUB>3.4</SUB>Fe<SUB>81.8</SUB>B<SUB>6</SUB> and Nd<SUB>15</SUB>Fe<SUB>79</SUB>B<SUB>6</SUB>, many grains of La-Ce-rich main phase are interconnected and the effect of enhancing the coercivity is weak in the sintered magnets. While for the mass ratio of 6:4 most grains of (La,Ce)-rich main phase are nearly separated and covered by the Nd-rich main phase and intergranular phase, and the coercivity increases significantly to 7.70 kOe. Compared with (MM<SUB>0.3</SUB>Nd<SUB>0.7</SUB>)<SUB>30.3</SUB>FebalB<SUB>0.96</SUB>Cu<SUB>0.1</SUB>Al<SUB>0.11</SUB> magnets prepared by the conventional method, the coercivity doesn’t decrease in the sintered composite magnets of MM<SUB>8.8</SUB>Nd<SUB>3.4</SUB>Fe<SUB>81.8</SUB>B<SUB>6</SUB>/Nd<SUB>15</SUB>Fe<SUB>79</SUB>B<SUB>6</SUB> though the MM content of 40 wt.% is higher. The optimization of Nd-rich-main-phase distribution as well as Nd substitution for La-Ce should be responsible for the significant increase of coercivity.
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
참고문헌 (29)
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