Metal powder refers to finely divided particles of metals or alloys, typically ranging from a few micrometers to a few hundred micrometers in size. Far more than just a raw material, metal powder is the foundational feedstock for a suite of advanced manufacturing technologies collectively known as powder metallurgy. The production of these powders is a science in itself, with common methods including atomization (where molten metal is disintegrated by a high-pressure stream of gas or water), chemical reduction, and electrolytic deposition. The chosen method dictates critical characteristics like particle size distribution, shape (spherical, irregular, or spongy), and porosity, all of which directly influence the final product's properties. Beyond 3D printing, metal powders are vital for more established techniques. In traditional press-and-sinter powder metallurgy, powder is compressed in a mold and then heated to bond the particles, creating net-shape or near-net-shape parts like automotive gears and self-lubricating bearings with minimal…

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