A multipole permanent magnet may be provided with a magnetic-field shunt. The multipole permanent magnet may be formed from compression-molded magnetic particles such as magnetically anisotropic rare-earth particles in an elastomeric polymer. The magnetic-field shunt may be formed from magnetic members in a polymer binder that are separated by gaps to allow the shunt to flex or from magnetic particles in a polymer binder. The magnetic particles in the polymer binder may be ferrite particles or other magnetic particles. The polymer binder may be formed from an elastomeric material and may be integral with the elastomeric polymer of the multipole permanent magnet or separated from the elastomeric polymer of the multipole permanent magnet by a polymer separator layer. Conductive particles may be formed in polymer such as the elastomeric polymer with the magnetic particles. The conductive particles may be configured to form electrical connector contacts and other signal paths.

The present invention relates to a composite component including a metal component having a substantially cylindrical shape or a substantially annular shape, and a ring-shaped bonded magnet disposed on the outer periphery of the metal component, the ring-shaped bonded magnet containing a thermoplastic resin, magnetic particles, and rubber particles.

Items such as fabric-based items may include magnetic strands. Magnetic strands may be formed using extrusion equipment. To form single component magnetic strands, first and second feed hoppers may respectively feed a base polymer and a magnet masterbatch to an extruder. The magnet masterbatch may include particles of a rare-earth alloy or other magnetic materials in a polymer blend. The extruder may push the base polymer and magnet masterbatch through a spinneret. To form bicomponent magnetic strands, a first extruder may push a base polymer and magnet masterbatch through a first set of openings in a spinneret, while a second extruder may push an additional polymer through a second set of openings in the spinneret. Bicomponent magnetic strands may have a magnetic core and non-magnetic sheath, may have a non-magnetic core and magnetic sheath, or may have other suitable configurations.

Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.

A method for manufacturing a permanent magnet includes preparing a plurality of permanent magnet blocks having the same size, spacing and arranging the plurality of permanent magnet blocks in a lower mold Having an opened upper side, pressing a side of the lower mold while circulating adhesive in the lower mold and integrating the plurality of permanent magnet blocks such that the adhesive is evenly applied to surface of each of the permanent magnet blocks, thereby forming a permanent magnet assembly and hardening the adhesive by heating the permanent magnet assembly.

Provided are a composite material having direct current superposition characteristics, low iron loss, and high strength, a magnetic core for a magnetic component and a reactor, the magnetic core and the reactor including the composite material, a converter including the reactor, and a power conversion device including the converter. A composite material includes a soft magnetic powder, a filler, and a resin portion enclosing the soft magnetic powder and the filler dispersed therein, wherein the filler has rubber and an outer circumferential layer that covers a surface of the rubber and that contains an organic substance, and the resin portion contains a thermoplastic resin.

A bond magnet molding is provided that contains coated magnetic particles having at least two layers of an oxide layer of 1-20 nm on a surface of magnetic particles and an organic layer of 1-100 nm on an outer side of the oxide layer. The bond magnet molding preferably includes a Zn alloy as a binder. The Zn alloy has a strain rate sensitivity exponent (m value) of not less than 0.3 and an elongation at break of not less than 50%. The magnet particles have a nitrogen compound containing Sm and Fe that are solidified using the binder at a temperature not higher than a molding temperature.

An object of the present invention is to provide a composition including magnetic powder having excellent fluidity and sufficient curing speed, and the present invention is a thermosetting composition including a crystalline radical polymerizable compound having a melting point in the range of 30 to 150? C. and magnetic powder.

A multipole permanent magnet may be provided with a magnetic-field shunt. The multipole permanent magnet may be formed from compression-molded magnetic particles such as magnetically anisotropic rare-earth particles in an elastomeric polymer. The magnetic-field shunt may be formed from magnetic members in a polymer binder that are separated by gaps to allow the shunt to flex or from magnetic particles in a polymer binder. The magnetic particles in the polymer binder may be ferrite particles or other magnetic particles. The polymer binder may be formed from an elastomeric material and may be integral with the elastomeric polymer of the multipole permanent magnet or separated from the elastomeric polymer of the multipole permanent magnet by a polymer separator layer. Conductive particles may be formed in polymer such as the elastomeric polymer with the magnetic particles. The conductive particles may be configured to form electrical connector contacts and other signal paths.

The present invention relates to a composite component including a metal component having a substantially cylindrical shape or a substantially annular shape, and a ring-shaped bonded magnet disposed on the outer periphery of the metal component, the ring-shaped bonded magnet containing a thermoplastic resin, magnetic particles, and rubber particles.