| 학회 |
한국재료학회 |
| 학술대회 |
2013년 가을 (11/06 ~ 11/08, 제주롯데호텔) |
| 권호 |
19권 2호 |
| 발표분야 |
B. 나노 재료(Nano Materials) |
| 제목 |
Novel method for low temperature sintering of barium hexaferrite with magnetic easy-axis alignment |
| 초록 |
Most applications of hexaferrites require sintered products, but sintering of hexaferrites at high temperatures degrades their magnetic properties and cannot be used as low-temperature co-fired ceramics. Additionally, due to the magnetic uniaxial anisotropy of hexaferrites, excellent magnetic properties are attained when the particles are aligned along the magnetic easy-axis. In order to overcome these problems, herein we suggest a new method to decrease the sintering temperature and improve the simultaneous alignment of magnetic particles along the easy-axis. NaCl-barium hexaferrite particles and NaCl-amorphous particles were sintered using the spark plasma sintering process. Using this method, a sintered body with a relative density of 92.9% and 70% alignment was fabricated at 800 oC for five minutes. In this method, the added NaCl played a significant role in facilitating the low temperature sintering and particle alignment. This method was found to be effective for low temperature sintering and nano-scale particle alignment. |
| 저자 |
Tae-Yeon Hwang1, Guk-Hwan An2, Yong-Ho Choa3
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| 소속 |
1Department of Fine/Fusion Chemical Engineering, 2Hanyang Univ., 3Ansan-si |
| 키워드 |
Hexaferrite; Low sintering temperature; Easy-axis magnetic alignment; Salt assisted ultrasonic spray pyrolysis; Spark plasma sintering
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| E-Mail |
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