Title :
Magnetic properties of melt spun SmFe11Ti-Sm2TM17 pseudobinary alloys
Author :
Huang, S.H. ; Chin, T.S. ; Chen, Y.S. ; Chen, S.K. ; Lin, C.H. ; Lee, P.Y.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Several alloys in the SmFe11Ti-Sm2TM17 (TM=Co/Fe/Cu/Zr) pseudobinary system containing O-90 wt.% Sm2TM17 were prepared by the melt spinning technique. A maximum as-spun coercivity of 4.6 kOe was obtained for the alloy containing 10 wt.% Sm2TM17 at a substrate velocity of 15 m/s. The coercivity is enhanced to 5.3 kOe after annealing at 800°C for 1 h. XRD (X-ray diffractometry) and TEM (transmission electron microscopy) were used to investigate the microstructure of the alloys. It is suggested that the grain refinement, doping of the 1-12 phase with Sm and other elements, and reduced free iron might be the main causes coercivity enhancement
Keywords :
X-ray diffraction examination of materials; cobalt alloys; coercive force; copper alloys; crystal atomic structure of alloys; ferromagnetic properties of substances; grain boundaries; iron alloys; permanent magnets; samarium alloys; titanium alloys; transmission electron microscope examination of materials; zirconium alloys; SmFe11Ti-Sm2(CoFeCuZr)17; X-ray diffractometry; coercivity; grain refinement; melt spun; pseudobinary system; transmission electron microscopy; Annealing; Coercive force; Copper alloys; Iron alloys; Magnetic properties; Samarium alloys; Spinning; X-ray diffraction; X-ray scattering; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
