MAGNETIC PROPERTIES AND HOT PLASTICITY OF HOT-PRESSING CAST PrFeB SYSTEM ALLOYS

Acta Metall Sin

1994, Vol. 30

Issue (20): 366-372 DOI:

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MAGNETIC PROPERTIES AND HOT PLASTICITY OF HOT-PRESSING CAST PrFeB SYSTEM ALLOYS

ZHOU Shouzeng;DONG Qingfei;SHI Zhenghua;ZHANG Shouhua(University of Science and Technology Beijing)

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ZHOU Shouzeng;DONG Qingfei;SHI Zhenghua;ZHANG Shouhua(University of Science and Technology Beijing). MAGNETIC PROPERTIES AND HOT PLASTICITY OF HOT-PRESSING CAST PrFeB SYSTEM ALLOYS. Acta Metall Sin, 1994, 30(20): 366-372.

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Abstract Correlation between hot-pressing deformation and magnetic properties,such as μ_0 M_s,B_r iH_c and (B.H)_m of pr_(17)Fe_(76.5) Cu_(1.5)B_5 alloy has been studied.The μ_0M_s, B_r and (B.H)_m may be improved with the increase of strain along direction parallel to pressure applied at 973 K at hot pressing rate of 70 × 10~(10)s~(-1).The improvement of μ_0M_s relates to the decrease of contents of Pr and Cu.The iH_c increases with the fineness of grains of Pr_2Me_(14)B phase. And increase of B_r and (B H)_m is mainly dependent on the aligned factor(cosθ)p B_r= 1.2 T, iH_c= 1220 kA/ m and (B .H)_m= 260 kJ/ m3 of hot pressed magnets were obtained.

Key words: PrFeB magnet hot-deformation magnet strain magnetic property

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1994/V30/I20/366

1周寿增编著．稀土永磁材料及其应用．北京:冶金工业出版社,1990:2082ShimodaT,AkiokaK,KobayashiO,YamagamiT．IEEETransMagn,1989;MAG—25:40993董清飞,北京科技大学博士学位论文,1991:1124周寿增,GrahamCDJr．金属材料研究,1989;15(1):15SchneiderG,HenigET,StadelmaierHH,PetzouG．Proc5thInterSymposiumonMagneticAnisotropyandCoercivityinRareEarth—transitionMetalAlloysBeijing,1987:3476田静华,黄毅英,梁敬魁．中国科学,1987;(2)A:159

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