Oxide-dispersion-enabled laser additive manufacturing of high-resolution copper.

ABSTRACT: Laser additive manufacturing of pure copper (Cu) with complex geometries opens vast opportunities for the development of functional devices in microelectronics and telecommunication. However, laser additive manufacturing of high-resolution pure Cu remains a challenge. Here we report a facile oxide-dispersion-strengthening (ODS) strategy that enables additive manufacturing of Cu with sub-100 μm (~70 μm) resolution by laser powder-bed fusion. This ODS strategy starts with oxygen-assisted gas atomisation to introduce ultrafine Cu₂O nanoparticles into the pure Cu powder feedstock. These nanoscale dispersoids not only improve the laser absorptivity and the viscosity of the melt but also promote dynamic wetting behaviour. The ODS Cu exhibits a remarkable yield strength of ~450 MPa and

SUBMITTER: Qu S 

PROVIDER: S-EPMC11971273 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature