CLAUDIO COSTA MOTTA

Resultados de Busca

Agora exibindo 1 - 3 de 3

The effect of niobium and boron content on magnetic properties and corrosion resistance of Pr-Fe-Co-B-Nd HD magnets
2007 - ANGELO, J.D.; MOTTA, C.C.; BARBOSA, L.P.; TAKIISHI, H.; COSTA, I.; FARIA, R.N.
The influence of cobalt content on the magnetic properties and corrosion of PrFeCoCuNbB sintered magnets
2004 - ANGELO, J.D.; TAKIISHI, H.; COSTA, I.; FARIA JUNIOR, R.N.; MOTTA, C.C.
The effect of particle size distribution on the magnetic properties of Pr-Fe-B sintered magnets
2003 - ANGELO, J.D.; PERIGO, E.A.; MOTTA, C.C.; FARIA JUNIOR, R.N.
This paper reports the results of investigations carried out to determine the influence of the particle size distribution on the magnetic properties of Pr16Fe76B8sintered magnets. Permanent magnets were prepared from the cast alloy using the powder metallurgy route and the hydrogen decrepitation process. The effect of the balls shape and weight on the particle size distribution was investigated. Spherical milling balls yielded magnetic powder with a single particle size distribution whereas spherical/tori balls yielded hydride powder with a bimodal particle size distribution.