SPHERICAL POWDER FOR MAKING THREE-DIMENSIONAL OBJECTS Russian patent published in 2024 - IPC B22F1/65 B22F9/08 B33Y70/00 

Abstract RU 2828268 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly, to production of spherical alloy powder from at least two refractory metals. It can be used in additive manufacturing or injection moulding processes. Alloy powder has homogeneous microstructure with uniform distribution of alloy components in powder particles and at least two crystalline phases, wherein content of titanium in powder of alloy is less than 1.5 wt.%. Powder is obtained by cold isostatic pressing of a powder mixture containing at least two refractory metals, wherein the particle size of the initial powder mixture is characterized by a D99 value of less than 100 mcm and the particle size of at least one of the refractory metals is characterized by a D99 value of less than 10 mcm, sintering at a temperature below the lowest melting point of the refractory metals of the initial powder mixture by 400 °C to 1150 °C, sintered block melting and melt spraying with simultaneous cooling.

EFFECT: obtaining homogeneous spherical powder of refractory alloy with controlled oxygen content.

17 cl, 9 dwg, 3 tbl, 1 ex

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RU 2 828 268 C1

Authors

Weinmann, Markus

Brumm, Holger

Schnitter, Christoph

Dates

2024-10-08Published

2020-11-13Filed