POWDER FOR POWDER ADDITIVE MANUFACTURING METHOD, POWDER ADDITIVE MANUFACTURING METHOD, MANUFACTURED PRODUCT, AND PRODUCTION METHOD FOR POWDER FOR POWDER ADDITIVE MANUFACTURING METHOD

摘要

Provided is a powder for a powder additive manufacturing method that has a good addition ratio of an auxiliary agent, a good addition formability (dispersibility) of the powder, and good manufacturing accuracy, or in other words, that is capable of forming, at the time of manufacturing, a powder layer of a uniform thickness without defects, and that is capable of accurately producing a desired manufactured product. The powder for a powder additive manufacturing method contains a thermoplastic resin and a water-soluble resin. The hydroxyl group content in the water-soluble resin is 30 wt% or greater, and the content of oxygen atoms in the water-soluble resin included in the particle surface, measured by X-ray photoelectron spectroscopic analysis using measurement condition [1], is 0.01 to 15 atm%. Measurement condition [1]: measurement device: X-ray photoelectron spectroscopic analyzer K-Alpha (ThermoFisher Scientific); measurement mode: narrow mode; excitation X-ray: monochromatic Al Kα (50 μm); X-ray irradiation area size: 400x200 μm.