Authors:
Fernanda Signor (1), Maria José Silva Carvalho (1), Augusto Botton Pozzebon (1), William Bevilaqua (2), Inacio Limberger (1), Natália de Freitas Daudt (1,3)
1- Grupo de Tecnologia e Mecânica dos Materiais (GMAT), Departamento de Engenharia Mecânica, Universidade Federal de Santa Maria, Brazil
2- Colégio Técnico Industrial de Santa Maria (CTISM), Universidade Federal de Santa Maria, Brazil
3- Mechanical Engineering Post-Graduate Program (PGMEC), Departamento de Engenharia Mecânica, Universidade Federal de Santa Maria, Brazil
Abstract:
The fabrication of copper parts by 3D-extrusion of highly viscous paste was studied. This technology is classified as sinter-based AM technology. Extrusion-based 3D printing have been often reported in literature for production of ceramics components, however there are still few studies on metal components. 3D-extrusion allows printing of metallic components with a low anisotropy index, by deposition of layers of a paste composed of polymeric solution loaded with metal powder. In the present study, we evaluated the effect of paste composition on the microstructure and compressive strength behavior of copper parts. For that three different composition of water based polymeric pastes loaded with copper particles were prepared. Green parts were printed by paste extrusion at room temperature. Afterwards the parts were debinded and sintered. Extrusion-based 3D printing of metals pastes is an attractive route for cost effective production of small batches of complex shaped parts.
DOI:
https://doi.org/10.59499/EP235764456