Investigation of Magnetic Properties of Porous Foam Metals and Its Effect on Magnetic Field
The magnetic properties of porous foam metals were investigated in this paper experimentally.A set of testing device including the coils,the magnetic core were developed.The effects of porous foam metals with different materials and thickness on the magnetic field were investigated.The results showed that,aiming to the same thickness of porous foam metals,if the materials with the relative larger magnetic permeability was adopted,the density of magnetic flux in the gap will be larger;to the porous foam metals with the magnetic permeability,the change of the material thickness will have obvious effect on the magnetic field,this would be intensified if the magnetic permeability of materials was increased.The test results will provide the experimental data for the research on magnetic characteristics of porous foam metals.