pps proceeding - Abstract Preview
pps proceeding
Symposium: S11 - Additive Manufacturing
Oral Presentation
 
 

Mechanical improvement of green metallic parts printed by binder-jet 3D printing

Hosseini Rad Somayeh (1), Sánchez Sergio Iván Yáńez (1), Goffin Alice (1), Schlachter David (1), Lennox Martin (1), Favis Basil (1), Therriault Daniel (1), Tavares Jason Robert (1)*

(1) Polytechnique Montreal - Quebec - Canada

Binder-jet 3D printing (BJP) is an attractive method of metal additive manufacturing (AM). In BJP, a binder is selectively deposited onto the powder bed, bonding these areas together to form a solid part, one layer at a time. One of the biggest challenges in BJP is the binder formulation to ensure the quality and strength of the green bodies. In this research, we have developed new water soluble and environmentally friendly binders. These binder formulations use a relatively low concentration of a polymer which helps in post processing steps to reduce the contamination of their residue in the final sintered part. With the aid of additives, the adhesion between the metallic surface and the binder has been increased. The experimental results reveal a significant improvement in mechanical properties of the green bodies printed with our new binders. This facilitates a successful printing of complex geometries as well as reducing failures in printed parts.