Title :
Nd-Fe-B thick films prepared by screen printing
Author :
Speliotis, Thanassis ; Niarchos, Dimitris ; Falaras, Polycarpos ; Tsoukleris, Dimitris ; Pepin, John
Author_Institution :
Inst. of Mater. Sci., NCSR "Demokritos", Athens, Greece
Abstract :
Magnetic NdFeB thick films were prepared by screen printing an NdFeB-based ink. The films are isotropic and the thickness varied from 30 μm to 1 mm. The printing parameters were optimized with respect to the mechanical and magnetic properties of the films. After curing at 120°C good adhesive nonporous films are obtained. The magnetization of films are 400 emu/cc, the coercive field is 1 T, the Br is 4 kG, and the energy product is 2.7 MGOe (21.5 kJ/m3). Rotors with those magnetic properties tested in stepper motors with promising efficiency.
Keywords :
boron alloys; coercive force; curing; ferromagnetic materials; iron alloys; magnetic thin films; neodymium alloys; rotors; thick films; 120 C; 30×10-6 to 1 mm; NdFeB; adhesive nonporous films; curing; film magnetization; ink; isotropic films; magnetic properties; magnetic thick films; mechanical properties; printing parameters; rotors; screen printing; stepper motors; Costs; Ink; Magnetic films; Magnetic materials; Magnetic properties; Magnets; Powders; Printing; Substrates; Thick films; Magnetic energy product; NdFeB magnetic thick films; magnetic hysteresis loops; screen printing; thick-film inks or pastes;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854945
