Metal powder composed of spherical particles
AssigneeSanyo Specia Steel Co., Ltd.
InventorsTakahisa Yamamoto, Tetsuro Kariya
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Abstract
A problem to be solved is to provide a metal powder having a variety of excellent performances, and, in order to solve such a problem, the present invention provides a metal powder that is composed of many spherical particles; that includes at least one of Ni, Fe, and Co, in which the total content (T.C.) of the Ni, the Fe, and the Co is 50 mass % or more; that has a cumulative 10 vol % particle size D10 of 1.0 μm or more; and in which a value Y is 7.5 to 24.0 as calculated by the following mathematical equation: Y=D50×ρ×S, where D50 represents a cumulative 50 vol % particle size of the powder, ρ represents a true density of the powder, and S represents a specific surface area of the powder.
Claims19
A metal powder composed of many spherical particles, the metal powder comprising at least one of Ni, Fe, and Co,
- wherein the total content (T.C.) of the Ni, the Fe, and the Co is 50 mass % or more,
- wherein the metal powder has a cumulative 10 vol % particle size D10 of 1.0 μm or more,
- wherein a ratio P2 of the number of particles having a circularity of 0.95 or more to the total number of the particles is 50% or more, and
- wherein a value Y is 7.5 to 24.0 as calculated by the following mathematical equation:
- Y=D50 (m)×ρ (kg/m3)×S (m2/kg)
- wherein D50 (m) represents a cumulative 50 vol % particle size of the powder, ρ (kg/m3) represents a true density of the powder, and S (m2/kg) represents a specific surface area of the powder.
Dependencies are inferred from the claim text.