Technische Universitat Darmstadt

Toyota Jidosha Kabushiki Kaisha

Centre National De La Recherche Scientifique

University of Sheffield

Leibniz Institute for Solid State and Materials Research Dresden

Magnotherm Solutions Gmbh

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Impulstec Gmbh

Oliver Gutfleisch

Tetsuya Shoji

Akira Kato

Noritsugu Sakuma

Hidefumi Kishimoto

Wilhelm Fernengel

Nora Dempsey

Peer Löbmann

Konstantin Skokov

Dominique Givord

Thomas Schrefl

Iliya Radulov

Tobias Braun

Stefan Eisert

Marius Specht

Konrad Löwe

Thomas George Woodcock

Gino Hrkac

Tino Gottschall

Valentin Brabänder

Michael Kuzmin

Valentin BRABÄNDER

Andreas Bittner

Tim MÜLLER

Martin Kilo

Stefan Senger

Armin Reller

Konstantin P Skokov

A process is disclosed for producing a magnetocaloric composite material for a heat exchanger. The process comprises the following steps: Providing (S) a plurality of particles () of a magnetocaloric material in a shaped body () and immersing the plurality of particles () present in the shaped body () into a bath in order to coat the particles by a chemical reaction and bond them to one another.

Process for producing a magnetocaloric composite material and a corresponding heat exchanger

A method is provided for producing an artificial permanent magnet, in a powder preparation step a main phase powder, which includes a rare-earth transition metal compound with permanently magnetic properties and has a first average particle size, is prepared and an anisotropic powder, which has a higher anisotropy field strength than the main phase powder and has a second average particle size, is prepared, wherein the second average particle size is smaller than the first average particle size. In a subsequent powder mixing step, the main phase powder and the anisotropic powder are mixed together to form a powder mixture and, in a subsequent heat treatment step, this powder mixture with the main phase powder of the first average particle size and with the anisotropic powder of the second average particle size is sintered to form an artificial permanent magnet.

Artificial permanent magnet and method for producing the artificial permanent magnet

A cooling apparatus includes a magnetocaloric material, a magnetizing device, a converting device for applying pressure or tension to the magnetocaloric material, and a movement mechanism to move the magnetocaloric material. The magnetocaloric material changes its temperature when there is a change in an external magnetic field and when there is a change in an applied pressure. The movement mechanism moves the magnetocaloric material to expose it alternatingly to the external magnetic field and the change in pressure and to cause a periodic temperature change in the magnetocaloric material, whereby periods of lower temperature can be used for cooling.

Cooling device and a method for cooling

A rare earth magnet, which is represented by a neodymium magnet (NdFeB) and neodymium magnet films with applications in micro-systems. A method for producing a rare earth magnet, comprising: (a) quenching a molten metal having a rare earth magnet composition to form quenched flakes of nanocrystalline structure; sintering the quenched flakes; subjecting the sintered body obtained to an orientation treatment; and applying a heat treatment with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and at the same time, low enough to prevent coarsening of the crystal grains, (b) thick films deposited on a substrate, applying an annealing to crystallize with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and, at the same time, low enough to prevent coarsening of the crystal grains.

Production method of rare earth magnet

Growing community of inventors

Darmstadt, Germany

Oliver Gutfleisch