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MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET
MANUFACTURING METHOD OF SmCo PERMANENT MAGNET POWDER, PERMANENT MAGNET POWDER AND BONDED MAGNET
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机译：m钴永磁粉，永磁粉及粘结磁铁的制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a manufacturing method of 2-17 based SmCo permanent magnet powder, 2-17 based SmCo permanent magnet powder obtained by the manufacturing method, and a bonded magnet obtained by using the 2-17 based SmCo permanent magnet powder. ;SOLUTION: The composition of 2-17 based SmCo permanent magnet powder is comprises R of 25.0-26.5% (where R is one kind or combination of at least two kinds of rare earth elements, with Sm at the center), Fe of 17.0-21.0%, Cu of 7.0-8.5%, Zr of 1.8-2.3%, and residual % of Co and inevitable impurities, when they are shown by weight percentage. In a nonoxidative atmosphere, by using permanent magnet alloy ingot manufactured by a strip cast method, solution treatment at 1,100-1,180°C and isothermal aging treatment at 750-900°C are performed. Continuously, slow cooling as far down as a temperature lower than or equal to 500°C, and isothermal aging treatment at 500°C or lower or a multistage aging treatment as far as a temperature lower than or equal to 500°C are performed. After that, rough grinding and fine grinding are performed, and permanent magnet powder is obtained.;COPYRIGHT: (C)2001,JPO
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