Magnetic Materials TRIZ Cases

Nd5Fe17 magnet grain boundary phase concentrates rare earth elements to isolate low coercivity sub-phases and boost overall coercivity.

A sintered R-T-B magnet undergoes heavy rare-earth diffusion from a fluoride or oxide source during relative motion heating.

A ThMn12 magnetic material with a dual-phase structure enhances coercive force and saturation magnetization, resolving the trade-off between these parameters.

Voids in the grain boundary phase of R-T-B magnets suppress domain wall movement, increasing coercivity without reducing residual flux density.

Hot deformed magnets eliminate coarse equiaxed grains by adding Nb or Ta to segregate at grain boundaries, boosting remanence to 1.54 T.

R2T14B crystal grains contain fine products that pin magnetic domain walls to enhance coercivity.

A hexagonal ferrite magnetic material achieves high Br+(⅓)HcJ values through optimized multi-element substitution.

Low Shore D hardness resin buffers compressive stress from curing, preserving magnetic flux density in multilayer cores.

Surface diffusion of heavy rare-earth elements optimizes grain size control, boosting coercive force without significantly reducing residual magnetization.

Continuous casting of amorphous iron alloy foils into layered composites reduces production time and costs.

A superconducting magnet exhaust pipe uses a detector and heater to prevent freezing clogs that cause pressure buildup and quench risks.

Heating rare earth magnets above 600°C enables dry gas absorption that separates magnetic materials, preventing oxidation and impurities during recycling.

A rare earth permanent magnet achieves pinning-type coercivity through a uniform magnetic intermetallic compound structure.

Hydrogen disproportionation and recombination treatments restore magnetic properties and corrosion resistance in compact rare earth permanent magnets.

Diffusing dysprosium along grain boundaries increases coercive force without reducing residual magnetic flux density or raising production costs.

Grain boundary diffusion of terbium, praseodymium, and gallium boosts coercivity while minimizing heavy rare earth usage.

A rare earth magnet with a ThMn12-type main phase and Sm-Co sub-phase particles enhances magnetic properties.

Alloy coating replaces oxide layers to eliminate substitution reactions, improving coercive force and thermal stability while simplifying manufacturing.

Anodic oxidation in non-aqueous electrolytes releases Nd2Fe14B grains from bulk magnets for direct reuse.

Sintered magnets with optimized R-T-M boundary phase ratios inhibit demagnetization at high temperatures by reducing magnetic coupling between grains.

A ThMn12 type magnetic material composition enhances saturation magnetization through optimized rare-earth and iron-cobalt concentrations.

A cutter blade presses a primary ultrafine-crystalline alloy ribbon on an elastically deformable soft base to fracture-cut the material along a straight line.

A Sm-Co permanent magnet uses a Th2Zn17 cell phase and platelet structure to achieve high residual magnetization.

Inert jet milling of rare earth magnet alloy powder below 1000 ppm oxygen prevents oxidation during grinding.

A ferrofluid deformable mirror uses electromagnets to actuate a non-uniform thickness reflective face sheet for dynamic optical platforms.

Precise alloy composition and heat treatment optimize grain boundary phase distance to achieve high coercive force without dysprosium reliance.

Precise compositional control of P, C, Si, and Al in an Fe-based amorphous alloy reduces core loss below 0.10 W/kg at 50 Hz.

ZrB2 crystals and R-Cu-rich phases at grain boundaries increase coercivity while reducing heavy rare-earth content to lower manufacturing costs.

Sequential light and heavy rare-earth element diffusion into grain boundaries improves coercive force while minimizing expensive material consumption.

Embedding coated magnetizable particles in rotors improves rotational stability by preventing magnetic attraction between individual magnets.

An R-(Fe,Co)-B sintered magnet uses a nanocrystalline grain boundary phase to maintain high coercivity without heavy rare earth elements.

A grain boundary diffusion method using a dry HRE layer on a carrier to enhance coercivity in sintered magnets.

Rapid heating prevents grain growth during phase transformation, maintaining low coercive force under thermal endurance testing.

Grain boundary diffusion of terbium and dysprosium via an R2-Ga alloy enhances coercivity while preserving remanence in sintered magnets.

Optimizing heavy rare earth ratios at grain boundaries improves corrosion resistance without degrading magnetic properties.

Optimizing Ga concentration to 0.030≤[Ga]/[R]≤0.100 enhances coercive force without reducing residual magnetic flux density.

R-T-B magnet grain boundaries use R-O-C-N concentrated parts with higher surface carbon ratios to reduce heavy rare earth segregation and improve coercivity.

Horizontal strip casting of hot-rolled steel with boron and zirconium additions prevents macrosegregation and brittleness during manufacturing.

Segregating yttrium at grain boundaries forms protective oxides that inhibit hydrogen adsorption and corrosion without reducing magnetic orientation.

R-T-B sintered magnet reduces voids to 0.2% via heavy rare earth diffusion, preventing element trapping and boosting coercive force.

A powder-filling system uses a sieve with varying opening sizes to control particle flow and ensure consistent material distribution.

Applying a transverse magnetic field after filling the die cavity suppresses density variance and alignment disturbance in rare-earth sintered magnets.

Replacing heavy rare earth elements with graphene reduces material costs while maintaining high temperature resistance and magnetic performance.

Ga, Cu, and Al additions in an R-T-B sintered magnet optimize phase distribution to maintain high coercive force while reducing heavy rare-earth content.

Grain boundary segregation of gallium, copper, and nitrogen suppresses hydrogen absorption while preserving residual magnetic flux density.

Optimized glass coating thickness and alloy composition minimize magnetoelastic anisotropy, enabling high-frequency GMI sensors with superior magnetic softness.

A ThMn12 magnetic compound with controlled rare earth and transition metal content achieves high saturation magnetization through optimized production.

Rare earth-cobalt composite magnetic material incorporates rare earth oxides and tin powder to enhance mechanical properties.

Nitrogen-based lubricants improve crystal orientation in rare earth sintered magnets without adding carbon that reduces coercivity.