High-Magnetic-Field Annealing and Coercivity in Sintered Nd-Dy-Fe-B-Type Magnets
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چکیده
منابع مشابه
Analysis Technique for Improving Coercivity of Nd-Fe-B Magnets and Development of Dy-free Magnet
Hiroyuki Yamamoto, Dr. Eng. Isao Kitagawa, Dr. Sc. Teruo Kohashi, Dr. Sc. Akira Sugawara, Dr. Eng. Takeshi Nishiuchi, Dr. Eng. OVERVIEW: Hitachi is working to improve the performance of the NdFe-B magnets that help make people’s way of life more energy efficient and reduce the load it places on the environment. To study the factors that govern coercivity, an important parameter of magnet perfor...
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Effects of post-sintering annealing treatment between 300 and 1000ºC for up to 8 hrs time periods followed by either furnace cooling (FC) or air-cooling (AC) on the hard magnetic properties of some Nd-Fe-B based sintered magnets was investigated. It was shown that the intrinsic coercivity (Hci), second quadrant demagnetization loop shape and thus the energy density (BH)max varied considerably a...
متن کاملImpulse Magnetization of Nd-Fe-B Sintered Magnets for Sensors
Magnetization of large Nd-Fe-B sintered permanent magnets is still challenging. This type of permanent magnet is electrically conductive, so impulse magnetization causes a flow of eddy currents which prevent magnetization of the whole volume of the magnet. The paper deals with the impulse magnetization of sintered Nd-Fe-B permanent magnets and shows a method for the determination of suitable pa...
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ژورنال
عنوان ژورنال: Journal of the Magnetics Society of Japan
سال: 2006
ISSN: 0285-0192
DOI: 10.3379/jmsjmag.30.447