Preparation and properties of Nd2Fe14B/α-Fe nanocomposite permanent magnets - 文章详情页

作者：

Li, Baowei (Li, Baowei.) | Li, Yongli (Li, Yongli.) | Yue, Ming (Yue, Ming.) (学者：岳明) | Zhang, Jiuxing (Zhang, Jiuxing.)

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摘要：

Fe　nanoparticles　prepared　by　sonochemical　treatment　of　carbonyl　iron　were　applied　to　coat　micrometer　sized　Nd2Fe14B　permanent　magnetic　powder.　The　composite　powders　were　then　prepared　into　bulk　nanocomposite　Nd2Fe14B/α-Fe　magnets.　By　using　spark　plasma　sintering　(SPS)　technique,　the　magnets　with　the　nominal　Fe　content　(mass　fraction)　of　5%　bares　optimal　magnetic　properties　of　Br0.86　T,　Hci　683.8　kA/m　and　(BH)max　95.92　kJ/m3　were　prepared.　A　high　ball　milling　pretreatment　to　the　composite　powders　is　helpful　for　obtaining　magnets　with　fine　grains　and　even　microstructure.　As　a　result,　the　Br　and　(BH)max　of　the　magnet　increase　to　0.94　T　and　113.6　kJ/m3,　respectively.

关键词：

Ball milling Magnetic properties Microstructure Nanocomposites Nanoparticles Permanent magnets Sonochemistry Spark plasma sintering

作者机构：

[ 1 ] [Li, Baowei]Key Laboratory of Functional Material, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Li, Yongli]Key Laboratory of Functional Material, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Yue, Ming]Key Laboratory of Functional Material, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Zhang, Jiuxing]Key Laboratory of Functional Material, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China

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