Title :
The magnetic properties of hot-rolled Pr17Fe77.5 B4M1.5(M =Cu/Ga/Ag/Al/In/Pb) alloys
Author :
Chang, W.C. ; Paik, C.R. ; Nakamura, H. ; Takahasi, N. ; Sugimoto, S. ; Okada, M. ; Homma, M.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
The magnetic properties of cast and hot-rolled Pr17Fe 77.5B4 M1.5 (M=Cu, Ga, Ag, Al, In, and Pb) alloys were investigated in order to explore the role of additive elements in improving the magnetic properties in the Pr-Fe-B system. It is found that Ga and Ag additions have an effect similar to that of Cu in increasing the coercivity in both cast and hot-rolled specimens. Al and In additions do not have these positive effects, while the Pb addition deteriorates the magnetic properties and workability. The coercivity of the hot-rolled magnets containing Ga, Ag, or Cu can easily reach 10 kOe or greater. This is due to the grain refinement as well as the enhanced smoothing of grain boundaries
Keywords :
alloying additions; boron alloys; coercive force; ferromagnetic properties of substances; hot rolling; iron alloys; praseodymium alloys; Pr17Fe77.5B4Ag1.5; Pr17Fe77.5B4Al1.5; Pr17Fe77.5B4Cu1.5; Pr17Fe77.5B4Ga1.5; Pr17Fe77.5B4In1.5; Pr17Fe77.5B4Pb1.5; additive elements; cast; coercivity; grain boundaries; grain refinement; hot-rolled; magnetic properties; workability; Additives; Aluminum alloys; Coercive force; Gallium alloys; Grain boundaries; Iron alloys; Magnetic properties; Magnets; Smoothing methods; Workability;
Journal_Title :
Magnetics, IEEE Transactions on
