▎ 摘　　要

NOVELTY - Composite powder comprises particles with a core of an iron based material and a coating of 0.1-1 wt.% a graphene based material. USE - The powder is useful for powder metallurgy and additive manufacturing processes (claimed). ADVANTAGE - The powder: provides improved flowability and fractal surface, hence greatly improves the powder handling in additive manufacturing (AM) and other powder metallurgy (PM)-based techniques; and utilizes the graphene material coating that reduces the oxidation of the iron based material particles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing the composite powder, comprising providing the iron base metal powder with a known size distribution, providing the graphene based material in dispersion, diluting the graphene based material and adjusting the pH to 3-9 with addition of a basic substance, while recording the concentration of the graphene based material in the solution, separating graphene agglomerates of the graphene material by sonication or agitation, dispersing the iron based metal powder in de-ionized water to create a slurry with predetermined iron based metal to water weight ratio, adding the graphene material dispersion to the iron based metal powder slurry in intervals or at a predetermined rate and mixing thoroughly for a predetermined time period, and drying the composite powder, where the content of the added graphene material dispersion is adjusted so that the concentration of the graphene material in the dried composite powder is 0.1-1 wt.%.