COPPER POWDER, METHOD FOR MANUFACTURING COPPER POWDER, AND METHOD FOR MANUFACTURING SOLID SHAPED OBJECT

摘要

The present invention provides a copper powder which is capable of fusionbondingwith a low energy laser by enabling heat to be efficiently inputted with ahigh absorptionrate for laser irradiation and has high convenience in handling, and providesa methodfor manufacturing the copper powder. One embodiment of the present inventionis acopper powder, having an absorption rate for light having a wavelength.lambda.= 1060 nm of18.9% to 65.0%, and an index, which is indicated by (the absorption rate forlight havinga wavelength .lambda.= 1060 nm) / (an oxygen concentration), of 3.0 or more.