Ndfeb Permanent Magnet
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Magnetic topology with axial flux concentration: a technique to improve permanent-magnet motor performance
Abstract This article presents a different topology for the magnetic circuit of permanent-magnet motors, using the concept of Axial Flux Concentration. By means of longitudinal extension of the rotor length beyond the stator core, a substantial increase in the flux per pole is enabled, improving the general performance of the machine. Even in low cost motors
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-12
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2. Application of neodymuim-iron-boron permanent magnets on the assembling of a novel planar actuator
This paper depicts a new planar actuator, with novel structure and construction features. It includes a slotless stationary plane armature and a mover with two permanent magnets. By using NdFeB permanent magnets with high-energy product, it became possible to develop a planar motor with a novel topology. The planar actuator develops movement over a plane sur
Publicado em: 2011
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3. Avaliação do efeito de tratamentos superficiais na resistência à corrosão de magnetos de Nd-Fe-B / Assessment of the effect of surface treatments on the corrosion resistance of Nd-Fe-B Magnets.
Nd-Fe-B magnets produced by powder metallurgy are highly susceptible to corrosion due to their complex microstructure and intrinsic porosity due to their fabrication process. Moreover, these magnets have excellent magnetic properties and find many applications. In the nuclear area, permanent magnets based on rare earth transition-iron-boron (Ne-Fe-B) are use
Publicado em: 2009
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4. Estudo de rotas alternativas para a fabricação de ímãs compósitos à base de Sm2Fe17N3
This monograph thesis concerns the study of alternative processing routes regarding the fabrication of permanent magnets based on the Sm2Fe17N3 intermetallic compound. The study is mainly based on the compound synthesis in powder form and its subsequently shaping to get the final magnet body. Instead of the traditional induction melting of metallic samarium
Publicado em: 2008
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5. Análise do campo magnético de um motor de ímã permanente no rotor utilizando o método dos elementos finitos / Finite element analysis of a permanent magnet motor
Neste trabalho é estudado um motor trifásico de ímã permanente no rotor, com fluxo não senoidal, através da análise do campo magnético. Essa máquina foi projetada utilizando-se a estrutura ferromagnética do estator de um motor de indução monofásico de 24 ranhuras o qual recebeu um novo enrolamento trifásico, e foi construído o rotor que é con
Publicado em: 2007
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6. Síntese e caracterização de nanocompósitos de sílica mesoporosa com partículas magnéticas para dispositivos de liberação controlada de fármacos
Ordered mesoporous materials like SBA-15 posses a network of channels and pores of well-defined size in the nanoscale range. This particular pore architecture makes them suitable for hosting a broad variety of compounds into the silica matrix, resulting in very promising material for a broad range of applications, including magnetic carriers for drug deliver
Publicado em: 2007