Iowa State University Research Foundation Inc

Ut-battelle, Inc.

Matthew J Kramer

Iver E Anderson

Emma Marie Hamilton White

Aaron G Kassen

Kevin W Dennis

Mariappan Parans Paranthaman

Jun Cui

Liangfa Hu

David J Byrd

Abhishek Sarkar

Cajetan Ikenna Niebedim

Gaoyuan Ouyang

Tsarafidy Raminosoa

Somashekara Adinarayanappa

Mark Christopher Haase

Thomas Lograsso

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

Embodiments of the present invention provide an electromagnet alignment system for AM or 3D printing technology providing improved in-situ alignment of the magnetic particulate material as it is dispensed during deposition to form a 3D shape. In-situ alignment of the magnetic particulate material can be controlled to be unidirectional or multi-directional.

Additive manufacturing with in-situ magnetic field source

Improved manufacturing processes and resulting anisotropic permanent magnets, such as for example alnico permanent magnets, having highly controlled and aligned microstructure in the solid state are provided. A certain process embodiment involves applying a particular orientation and strength of magnetic field to loose, binder-coated magnet alloy powder particles in a compact-forming device as they are being formed into a compact in order to preferentially align the magnet alloy powder particles in the compact. The preferential alignment of the magnet alloy powder particle is locked in place in the compact by the binder after compact forming is complete. After removal from the device, the compact can be subjected to a subsequent sintering or other heat treating operation.

Heat treatable magnets having improved alignment through application of external magnetic field during binder-assisted molding

Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.

Solid state grain alignment of permanent magnets in near-final shape

Growing community of inventors

Ankeny, IA, United States of America

Matthew J Kramer