A porous carbon material composite formed of a porous carbon material and a functional material and equipped with high functionality. The porous carbon material composite is formed of (A) a porous carbon material obtainable from a plant-derived material having a silicon (Si) content of 5 wt % or higher as a raw material; and (B) a functional material adhered on the porous carbon material, and has a specific surface area of 10 m.sup.2/g or greater as determined by the nitrogen BET method and a pore volume of 0.1 cm.sup.3/g or greater as determined by the BJH method and MP method.

A porous carbon material composite formed of a porous carbon material and a functional material and equipped with high functionality. The porous carbon material composite is formed of (A) a porous carbon material obtainable from a plant-derived material having a silicon (Si) content of 5 wt % or higher as a raw material; and (B) a functional material adhered on the porous carbon material, and has a specific surface area of 10 m.sup.2/g or greater as determined by the nitrogen BET method and a pore volume of 0.1 cm.sup.3/g or greater as determined by the BJH method and MP method.

The present invention relates to a process for preparing a rodlike magnetic ferroferric oxide (Fe.sub.3O.sub.4) material and use thereof. The preparation includes the following steps: step 1: magnetic Fe3O4 nanoparticle preparation; and step 2: self-assembly of magnetic Fe3O4@SiO2 nanoparticles into a rodlike magnetic material. When in use, the rodlike magnetic Fe.sub.3O.sub.4 material prepared by the process according to claim 1 is used in micro- and nano-motors, which can implement rotation and deflection in an external magnetic field. The present invention provides a process for preparing a rodlike magnetic Fe.sub.3O.sub.4 material. The rodlike magnetic ferroferric oxide material prepared by the process is suitable for mass production on an industrial scale, featuring identifiable direction of the magnetic moment, strong magnetism, good magnetic response, simple process, and low cost.

The present invention relates to a process for preparing a rodlike magnetic ferroferric oxide (Fe.sub.3O.sub.4) material and use thereof. The preparation includes the following steps: step 1: magnetic Fe3O4 nanoparticle preparation; and step 2: self-assembly of magnetic Fe3O4@SiO2 nanoparticles into a rodlike magnetic material. When in use, the rodlike magnetic Fe.sub.3O.sub.4 material prepared by the process according to claim 1 is used in micro- and nano-motors, which can implement rotation and deflection in an external magnetic field. The present invention provides a process for preparing a rodlike magnetic Fe.sub.3O.sub.4 material. The rodlike magnetic ferroferric oxide material prepared by the process is suitable for mass production on an industrial scale, featuring identifiable direction of the magnetic moment, strong magnetism, good magnetic response, simple process, and low cost.

There is provided a soft magnetic powder in which when a volume-based particle size distribution is measured by a laser diffraction scattering type particle size distribution measuring device, and the particle size distribution is plotted in an orthogonal coordinate system in which a horizontal axis represents a particle diameter and a vertical axis represents a relative particle amount to draw a particle size distribution curve, the particle size distribution curve has a first peak having a local maximum at a particle diameter D1 [μm] and a second peak having a local maximum at a particle diameter D2 [μm] that is larger than the particle diameter D1, the particle diameter D1 is in a range of 1.0 μm or more and 16.0 μm or less, and a difference D2−D1 between the particle diameter D1 and the particle diameter D2 satisfies the following formulas (A-1) and (A-2).

D2−D1=k1×D1  (A-1)

1.0≤k1≤15.0  (A-2)

There is provided a soft magnetic powder in which when a volume-based particle size distribution is measured by a laser diffraction scattering type particle size distribution measuring device, and the particle size distribution is plotted in an orthogonal coordinate system in which a horizontal axis represents a particle diameter and a vertical axis represents a relative particle amount to draw a particle size distribution curve, the particle size distribution curve has a first peak having a local maximum at a particle diameter D1 [μm] and a second peak having a local maximum at a particle diameter D2 [μm] that is larger than the particle diameter D1, the particle diameter D1 is in a range of 1.0 μm or more and 16.0 μm or less, and a difference D2−D1 between the particle diameter D1 and the particle diameter D2 satisfies the following formulas (A-1) and (A-2).

D2−D1=k1×D1  (A-1)

1.0≤k1≤15.0  (A-2)

The invention relates to a magnetocaloric lattice element formed by fibres of magnetocaloric material, wherein the fibres are arranged in respective parallel lattice planes, each fibre having a respective mass of magnetocaloric material, the fibres of a given lattice plane do not contact each other but each fibre of a given lattice plane is attached to at least two fibres in a next neighbouring lattice plane, and wherein the magnetocaloric lattice element exhibits exactly one predominant mass-weighted direction of longitudinal fibre extension. When arranged in alignment of its predominant mass-weighted direction of longitudinal fibre extension with an external magnetic field, the magnetocaloric lattice element achieves an advantageous, particularly high magnetization of the magnetocaloric material, and as a consequence improves the performance of the magnetocaloric cooling device.

A process is disclosed for producing a magnetocaloric composite material for a heat exchanger. The process comprises the following steps: Providing (S110) a plurality of particles (110) of a magnetocaloric material in a shaped body (200) and immersing the plurality of particles (110) present in the shaped body (200) into a bath in order to coat the particles by a chemical reaction and bond them to one another.

A process for liquefying a process gas that includes introducing a heat transfer fluid into an active magnetic regenerative refrigerator apparatus that comprises a single stage comprising dual multilayer regenerators located axially opposite to each other.

A preparation method for a metal soft magnetic composite material inductor includes: smelting Fe, Si and Cr and then employing a water atomization or gas atomization means to fabricate an alloy powder; after sifting by particle size, mixing powders of different particle size levels and performing coating insulation, and performing post-granulation to obtain a metal soft composite material granulation powder; adopting the granulation powder to press a material cake, and transferring and molding same; adopting a hollow coil in a liquid-phase coating mold cavity, curing and demolding to obtain a semi-finished product, then continuously heating and curing the semi-finished product, and preparing an end electrode to obtain a finished inductor.