The present invention relates to an additive manufacturing powder material including Fe alloy particles each having an oxide film on a surface thereof, in which the Fe alloy particles satisfy d≤15 and I/d≤0.025, where d [nm] represents a thickness of the oxide film, and a peak intensity ratio I represents an intensity ratio IB/IA of a peak B in a region B of a Raman shift of 1,309 to 1,329 cm.sup.−1 to a peak A in a region A of a Raman shift of 657.5 to 677.5 cm.sup.−1 in a Raman spectrum.

The present invention relates to an additive manufacturing powder material including Fe alloy particles each having an oxide film on a surface thereof, in which the Fe alloy particles satisfy d≤15 and I/d≤0.025, where d [nm] represents a thickness of the oxide film, and a peak intensity ratio I represents an intensity ratio IB/IA of a peak B in a region B of a Raman shift of 1,309 to 1,329 cm.sup.−1 to a peak A in a region A of a Raman shift of 657.5 to 677.5 cm.sup.−1 in a Raman spectrum.

A method for producing a magnetic powder includes performing a reduction treatment on the surface of particles including a hard magnetic material to form core-shell particles each having a shell portion including a soft magnetic material.

A method for manufacturing metal powder is provided. The method includes preparing first metal powder, agglomerating the first metal powder to manufacture second metal powder in which the first metal powder is agglomerated, coating the second metal powder with an organic binder, and agglomerating and coarsening the second metal powder coated with the organic binder to manufacture third metal powder having higher flowability than the second metal powder coated with the organic binder.

A method for manufacturing metal powder is provided. The method includes preparing first metal powder, agglomerating the first metal powder to manufacture second metal powder in which the first metal powder is agglomerated, coating the second metal powder with an organic binder, and agglomerating and coarsening the second metal powder coated with the organic binder to manufacture third metal powder having higher flowability than the second metal powder coated with the organic binder.

Post-treatment method and/or fine patterning method of effect pigment-containing or metal-containing particle-containing objects, for example car body parts or cosmetic containers or layers, for example paint layers or printing ink layers, by means of energy input (e.g. heat input, preferably by laser light), whereby the hiding power of metal-containing pigment platelets or metal-containing particles is permanently reduced by their change in shape factor. In the treated surfaces, this change in shape factor causes a permanent local increase in transparency, translucency or transmission for electromagnetic waves, in particular radar wave, radio wave and/or light wave transmission, and/or a local reduction in reflectance, for example for the production of painted radomes. The process differs from conventional laser marking in that the transmission for electromagnetic waves of normally reflective metal-effect pigment surfaces or metal-containing particles is permanently increased by the change in shape factor caused by the laser beam, whereby pigment platelets or particles are changed either by direct melting and/or by triggering an auxiliary chemical reaction in such a way that their metal core is at least partially melted, possibly chemically transformed and/or destroyed.

Post-treatment method and/or fine patterning method of effect pigment-containing or metal-containing particle-containing objects, for example car body parts or cosmetic containers or layers, for example paint layers or printing ink layers, by means of energy input (e.g. heat input, preferably by laser light), whereby the hiding power of metal-containing pigment platelets or metal-containing particles is permanently reduced by their change in shape factor. In the treated surfaces, this change in shape factor causes a permanent local increase in transparency, translucency or transmission for electromagnetic waves, in particular radar wave, radio wave and/or light wave transmission, and/or a local reduction in reflectance, for example for the production of painted radomes. The process differs from conventional laser marking in that the transmission for electromagnetic waves of normally reflective metal-effect pigment surfaces or metal-containing particles is permanently increased by the change in shape factor caused by the laser beam, whereby pigment platelets or particles are changed either by direct melting and/or by triggering an auxiliary chemical reaction in such a way that their metal core is at least partially melted, possibly chemically transformed and/or destroyed.

Disclosed is a method for producing a blade for a turbomachine, which method comprises: providing a blade root, having a first platform region, from a first material; providing on the first platform region at least one capsule that is filled with a metallic and/or ceramic powder that comprises at least one second material which is different from the first material, for producing a blade airfoil having a second platform region; producing and shaping a blade airfoil from the capsule that is filled with the powder by at least one thermal input method, thereby connecting the blade root to the blade airfoil in respective platform regions.

Also disclosed is a blade which is obtainable and/or obtained by this method.

Disclosed are an anode active material for lithium secondary batteries, the anode active material comprising: a core part including a carbon-silicon complex and having a cavity therein; and a coated layer which is formed on the surface of the core part and includes a phosphor-based alloy.

Disclosed are an anode active material for lithium secondary batteries, the anode active material comprising: a core part including a carbon-silicon complex and having a cavity therein; and a coated layer which is formed on the surface of the core part and includes a phosphor-based alloy.