Battelle Memorial Institute

Iowa State University Research Foundation Inc

Other

University System of Maryland

Ut-battelle, Inc.

Emerald Energy Nw, LLC

Jun Cui

Ichiro Takeuchi

Baozhi Cui

Kerry D Meinhardt

Yunho Hwang

Curt A Lavender

John A Barclay

Yiming Wu

Jamie D Holladay

Jan Muehlbauer

Edwin C Thomsen

Evgueni Polikarpov

Manfred R Wuttig

Iver E Anderson

Glenn J Grant

Jamelyn D Holladay

Reinhard Radermacher

Kevin W Dennis

Brian C Sales

Guosheng Li

Saumyadeep Jana

K Reinhard Radermacher

Matthew J Kramer

Yuri Hovanski

David S Parker

Andriy Palasyuk

Benjamin S Conner

Brandt Jensen

Tribhuwan Pandey

Jung Pyung Choi

Gaoyuan Ouyang

Gaoyuang Ouyang

Tsarafidy Raminosoa

A permanent magnetic composition comprising the formula:(LaMNd)FeM'CoB  (1)

Reduced critical rare earth high temperature magnet

A novel architecture for al motor rotor and stator of an electrical motor device as well as other electromagnetic device using soft magnetic wires and/or strips bundled and shaped to provide a desired magnetic flux path.

Soft magnetic wire/strip array for motor stator and rotor

The present invention provides fine grain structures for rare earth permanent magnets (REPMs) and their production in a manner to significantly enhance flexural strength and fracture toughness of the magnets with no or little sacrifice in the hard magnetic properties. The tough REPMs can have either homogeneous or heterogeneous refined grain microstructural architectures achieved by introducing a small amount of additive particle materials into the magnet matrix, such as fine-sized, insoluble, chemically stable, and non-reactive with the magnet matrix. These additive materials can act effectively as both heterogeneous nuclei sites and grain growth inhibitors during the heat treatment processes, which in turn resulting in refined grain structures of the REPMs. Alternatively, the fine grain structures were also achieved by using magnet alloy feedstock powders with finer particle sizes. The fine grains acting as the strengthening sites can inhibit the crack nucleation and can also slow down the propagation of micro-cracks, which in turn increasing magnet's fracture toughness.

Fine grain structures for tough rare earth permanent magnets

New types of particle feedstocks and heterogeneous grain structures are provided for rare earth permanent magnets (REPMs) and their production in a manner to significantly enhance toughness of the magnet with little or no sacrifice in the hard magnetic properties. The novel tough REPMs made from the feedstock have heterogeneous grain structures, such as bi-modal, tri-modal, multi-modal, laminated, gridded, gradient fine/coarse grain structures, or other microstructural heterogeneity and configurations, without changing the chemical compositions of magnets.

Feedstock and heterogeneous structure for tough rare earth permanent magnets and production therefor

The invention involves producing discontinuous, flake-shaped particles of a soft magnetic material, coating the flake-shaped particles with an electrically insulating coating, and consolidating the coated flaked-shaped particles to form a soft magnetic bulk shape. The consolidated bulk shape can comprise a layer or a simple or complex 3D magnet part shape, which has a consolidated layered microstructure that includes laminated soft magnetic regions that are substantially encapsulated by an electrical insulating layer to increase the resistivity of soft magnetic material, especially when used in silicon iron magnet parts.

Near net shape bulk laminated silicon iron electric steel for improved electrical resistance and low high frequency loss

A process for liquefying hydrogen gas into liquid hydrogen that includes:

Active magnetic regenerative liquefier using process gas pre-cooling from bypass flow of heat transfer fluid

A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.

Thermoelastic cooling

A process for liquefying a process gas that includes:

A compact cooling system based on thermoelastic effect is provided. In one embodiment, the system comprises a pair of rollers serving as a heat sink, stress applicator and belt drive, a cold reservoir and a solid refrigerant belt coupled to the cold reservoir and to the heat sinks to pump heat from the cold reservoir to the heat sink. The refrigerant belt comprises solid thermoelastic materials capable of thermoelastic effect. The refrigerant material is mechanically compressed when entering the gap of the roller and subsequently released after passing through. When compressed the refrigerant material transforms to martensite phase and releases heat to the roller and neighboring materials. After released by the rollers, the refrigerant material transforms back to austenite and absorbs heat from the ambient atmosphere.

Compact thermoelastic cooling system

A die tool and process are described that provide friction consolidation fabrication and friction consolidation extrusion fabrication products including permanent magnets, and other extrusion and non-extrusion structures. The present invention overcomes previous particle size, texture, homogeneity and density limitations in conventional metallurgy processes.

System and process for friction consolidation fabrication of permanent magnets and other extrusion and non-extrusion structures

A scalable process is detailed for forming bulk quantities of high-purity &#x3b1;-MnBi phase materials suitable for fabrication of MnBi based permanent magnets.

Process for preparing scalable quantities of high purity manganese bismuth magnetic materials for fabrication of permanent magnets

A system and method for storing cold energy are detailed. The system includes a solid refrigerant in a structured form that stores cold energy. Upon deformation, the solid refrigerant transforms into a high energy deformed state from a low energy non-deformed state. In the deformed state, the solid refrigerant stores cold energy that can be released to a desired location upon demand.

System and process for storing cold energy

Growing community of inventors

Richland, WA, United States of America

Jun Cui