| 摘要 |
Flexible magnetic pads (10) having a magnetic core (12) dispersed in a flexible polymeric outer layer (22) having oppositely facing, single pole surfaces (18, 20) with increased magnetic strength and penetration depth are disclosed that comprise a magnetic core (12) having from about 40 to about 60 weight percent of a first ferromagnetic material (14) such as Nd-Fe-B having a predetermined average particle size ranging from about 25 to about 325 microns, and at least one other ferromagnetic filler material (24) having a smaller predetermined average particle size such that the smaller particles fill a substantial number of the interstices between the particles of the first ferromagnetic material. A preferred ferromagnetic filler material is from about 5 to 15 weight percent strontium ferrite having an average particle size of about 50 microns. |
