Ferromagnetic grain boundary signature in die-upset Re-Fe-B magnets
نویسندگان
چکیده
منابع مشابه
Magnetic micro-structural uniformity of die-upset Nd-Fe-B magnets
Magnetic micro-structural uniformity of die-upset Nd-Fe-B magnets" (2012). Si-Hwang Liou Publications. Paper 101. magnets have been prepared with height reduction (h) in the range of 60 to 88%. The energy product as high as 50.4 MGOe was obtained in the sample with h $ 70%. The magnetic domains of the samples are revealed by using magnetic force microscopy (MFM). The average domain widths of th...
متن کاملMagnetic Properties Improvement of Die-upset Nd-Fe-B Magnets by Dy-Cu Press Injection and Subsequent Heat Treatment
Ultrafine-grained die-upset Nd-Fe-B magnets are of importance because they provide a wide researching space to redesign the textured structures. Here is presented a route to obtain a new die-upset magnet with substantially improved magnetic properties. After experiencing the optimized heat treatment, both the coercivity and remanent magnetization of the Dy-Cu press injected magnets increased su...
متن کاملCoercivity enhancement of Nd-Fe-B sintered magnets by grain boundary modification via reduction-diffusion process
The interface between the Nd2Fe14B particles and the grain boundary surrounding them in Nd-Fe-B sintered magnets was modified by diffusion Dy metal selectively through the grain boundary involving the reduction of Dy2O3 or DyF3 with CaH2 and the coercivity of them was effectively enhanced from 0.98 MA/m to 1.42 MA/m with keeping the high value of remanence. The resultant coercivity was higher t...
متن کاملGRAIN BOUNDARY SEGREGATION OF B IN Ni
Grain boundary segregation of boron in nickel has been investigated using secondary ion mass spectrometry and FIM-AP techniques. Preliminary results show that segregation is of the equilibrium type which means that boron was concentrated to a few atomic layers at the grain boundaries and that the amount of segregation increased with decreasing annealing temperature.
متن کاملGrain Boundary Specific Segregation in Nanocrystalline Fe(Cr)
A cross-correlative precession electron diffraction - atom probe tomography investigation of Cr segregation in a Fe(Cr) nanocrystalline alloy was undertaken. Solute segregation was found to be dependent on grain boundary type. The results of which were compared to a hybrid Molecular Dynamics and Monte Carlo simulation that predicted the segregation for special character, low angle, and high ang...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scripta Metallurgica et Materialia
سال: 1995
ISSN: 0956-716X
DOI: 10.1016/0956-716x(95)00410-w