Title :
Advances in powder metallurgy of soft magnetic materials
Author :
Oliver, Christopher G.
Author_Institution :
Hoeganaes Corp., Riverton, NJ, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
This paper discusses two new powder metallurgy processes that provide increased soft magnetic performance over conventional techniques. The first is a process involving elevated compaction temperatures which enable sintered densities of 7.59 g/cm3 for iron containing 0.35% by weight of phosphorus. Maximum permeabilities exceeding 6,000 with saturation inductions of 19,730 G are typical results utilizing this process. The second process involves producing a thin plastic coating on discrete iron particles. Upon compaction, the plastic coating between particles provides a material with constant permeability up to 100,000 Hz and mechanical strength of 250 MPa. Plastic coated iron compacts provide a moldable material with isotropic high frequency soft magnetic properties
Keywords :
densification; electromagnetic induction; ferromagnetic materials; iron; iron alloys; magnetic permeability; mechanical strength; phosphorus alloys; powder metallurgy; sintering; soft magnetic materials; 100000 Hz; 250 MPa; Fe; Fe-P; discrete Fe particles; elevated compaction temperatures; isotropic high frequency soft magnetic properties; mechanical strength; moldable material; permeabilities; powder metallurgy; saturation inductions; sintered densities; soft magnetic materials; thin plastic coating; Coatings; Compaction; Iron; Magnetic materials; Permeability; Plastics; Powders; Saturation magnetization; Soft magnetic materials; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
