Study on bulk nanocrystalline S2Co17sintered magnet - 文章详情页

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Bulk　nanocrystalline　Sm2Co17sintered　magnet　was　prepared　by　high　energy　ball-milling　and　spark　plasma　sintering　(SPS)　technique.　Structure　and　magnetic　properties　of　the　powders　and　magnet　were　studied.　XRD　patterns　show　that　annealed　at　low　temperature　(7structure.　When　annealed　temperature　is　above　1023K,　the　main　phase　is　Th2Zn17structure.　With　increasing　the　annealed　temperature　from　923-1223K,　the　coercivity　of　the　powders　decrease　from　0.99-0.12T.　The　sintered　magnet　also　exhibits　TbCu7structure　after　SPS　process.　TEM　observation　indicates　that　the　average　grain　size　of　the　magnet　is　about　35　nm.　Magnetic　measurement　of　the　sintered　magnet　shows　that　the　remanence　is　0.65T　and　the　coercivity　reaches　0.87T;　The　magnet　exhibits　a　better　thermal　stability　with　a　remanence　of　0.6T　and　a　coercivity　of　0.32T　at　573K.

关键词：

Coercive force Ball milling Temperature Annealing Remanence Spark plasma sintering Magnets Nanocrystals Nanocrystalline powders Powders Sintering

作者机构：

[ 1 ] [Zhang, Dong-Tao]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Xu, Gang]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China
[ 3 ] [He, Jian]Magnetic Material Testing Laboratory, National Institute of Metrology, Beijing 100013, China
[ 4 ] [Yang, Jian-Jun]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Yue, Ming]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Liu, Wei-Qiang]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Zhang, Jiu-Xing]The Key Laboratory of Advanced Functional Materials Ministry of Education, Beijing University of Technology, Beijing 100124, China

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