Title :
Improvement in magnetic properties of (Sm,Pr)Co4.6 alloys by a CCIA treatment
Author :
Chen, S.-Ken ; Heh, S.-J. ; Jin, Fu-Teh
Author_Institution :
Mater. Res. Labs., ITRI, Hsinchu, China
fDate :
3/1/1988 12:00:00 AM
Abstract :
A CCIA (controlled cooling and isothermal aging) treatment was adopted to check the reproducibility problem of (Sm,Pr)Co4.6 presented by M. Velicescu (1982) and to improve the magnetic properties of (PrxSm1-x)Co4.6 alloys. It was shown that controlled cooling rate between sintering and isothermal aging temperatures profoundly affects the scattering of magnetic property data. By this CCIA treatment the composite (Sm,Pr)Co4.6 alloy was shown to preserve merits of both SmCo5 and PrCo5 alloys.
Keywords :
ageing; cobalt alloys; magnetic properties of substances; praseodymium alloys; samarium alloys; (PrxSm1-x)Co4.6; cooling; isothermal aging; magnetic properties; Coercive force; Cooling; Grain boundaries; Grain size; Magnetic properties; Magnets; Microstructure; Optical microscopy; Temperature control; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
