Title :
Effect of Ga, Si and Nb additions on the phases and magnetic properties of melt-spun Nd-Fe-B alloys
Author :
Zhou, Shao-Xiong ; Johansson, P. ; Savage, S.J. ; Cui, Li-Ya
Author_Institution :
Central Iron & Steel Res. Inst., Beijing, China
fDate :
9/1/1990 12:00:00 AM
Abstract :
The phase constitution and magnetic properties of ribbons in the system Nd0.15(Fe0.935-xMxB0.065 )0.85, where M=Nb, Si, and Ga, and 0⩽x ⩽0.06, have been investigated by X-ray diffraction, magnetic balance, and vibrating sample magnetometer measurements. The Curie temperature, Tc, is found to increase with the addition of Ga and Si, but Nb addition causes a small reduction in T c. The saturation magnetization displays a monotonic decrease with Ga and Nb substitution, and the intrinsic coercivity was increased significantly, to 19.1 kOe and 20.5 kOe, respectively, for x=0.06. The addition of Si reduces the intrinsic coercivity and enhances the saturation magnetization because of the presence of α-Fe
Keywords :
Curie temperature; X-ray diffraction examination of materials; alloying additions; boron alloys; coercive force; ferromagnetic properties of substances; iron alloys; magnetic transitions; magnetisation; melt spinning; neodymium alloys; phase equilibrium; Curie temperature; Nd-Fe-B alloys; Nd0.15(Fe0.935-xGaxB0.065 )0.85; Nd0.15(Fe0.935-xNbxB0.065 )0.85; Nd0.15(Fe0.935-xSixB0.065 )0.85; X-ray diffraction; intrinsic coercivity; magnetic balance; magnetic properties; melt-spun; monotonic decrease; phase constitution; ribbons; saturation magnetization; vibrating sample magnetometer; Coercive force; Constitution; Iron; Magnetic properties; Magnetometers; Neodymium; Niobium; Saturation magnetization; Vibration measurement; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
